Late Amendment Allowed, Appeal Adjourned: Mother Gets a Second Chance to Run the Real Appeal — But Pays $15,241 for the Delay

In Cowden & Walsman [2026] FedCFamC1A 129, Campton J dealt with a late Application in an Appeal filed by the mother shortly before the substantive parenting appeal was due to be heard. The mother sought to fundamentally recast her appeal grounds, rely on amended appeal documents, and adduce further evidence. The father opposed the application, arguing prejudice and delay. The Court accepted that the amended grounds changed the nature of the appeal and that the father was prejudiced, but held that the interests of justice required the appeal to be determined on its “true merits”. Leave was granted in part, the appeal was adjourned to 29 September 2026, and the mother was required to pay the father’s thrown-away costs fixed at $15,241 as a condition of the indulgence.

🧩 Facts and Issues

Facts:

The mother appealed parenting orders made on 20 March 2026 concerning two children, X, born in late 2015, and Y, born in early 2018. The parents commenced cohabitation in 2011, married in late 2012, separated in early 2021, and divorced in late 2022.

X had significant additional needs. He was diagnosed with a neurological condition soon after birth, lived with epilepsy, had a mild intellectual disability, and was being assessed for autism spectrum disorder or ADHD. The parenting dispute included issues about schooling, treatment and therapy for X, extracurricular activities, the children’s needs, parental capacity, co-parenting capacity, and the role of the father’s fiancée, Ms D, in the children’s lives.

At trial, final orders were made for the children to live with the father, spend week-about time with the mother, and for the father to have sole decision-making responsibility for both children’s education and health, and for X’s extracurricular activities. The father was also to hold the children’s travel documents when not in use.

The mother’s original appeal challenged those orders on grounds including failure to consider Ms D’s harmful behaviour or lack of insight, inadequate reasons, lack of procedural fairness about the children living with the father, alleged error about the need for a single home address, and travel-document issues. Shortly before the appeal hearing, the mother sought leave to file a Further Amended Notice of Appeal that fundamentally changed the case.

Issues:

1. Should the mother be granted leave to further amend her Notice of Appeal out of time?
2. Should she be permitted to rely on an Amended Summary of Argument and Amended List of Authorities?
3. Should the substantive appeal hearing proceed immediately or be adjourned?
4. Was the prejudice to the father capable of being managed by time and costs?
5. Should the mother’s application to adduce further evidence be dealt with immediately or at the substantive appeal?
6. What costs and timetable orders were required to balance fairness between the parties?

⚖️ Applicable Law – Legislation, Regulations, Rules

Federal Circuit and Family Court of Australia (Family Law) Rules 2021 (Cth)

• r 13.10 — operation suspended for the purpose of permitting the filing of the further amended appeal documents.
• r 13.23 — governs filing of Summaries of Argument and Lists of Authorities in appeals.
• r 13.39 — relevant to the mother’s application to adduce further evidence on appeal.
• r 1.31 — relied upon in the procedural history concerning alteration of time limits.
• Sch 3 — scale costs, relevant to the father’s thrown-away costs fixed at $15,241 and later costs schedules.

The judgment is procedural. It does not decide the substantive parenting appeal or the mother’s further evidence application. It decides whether the mother may reshape the appeal shortly before hearing, and on what terms.

📌 Precedents Relied On

• Madden & Madden [2006] FamCA 1391 — late amendment to appeal grounds is an indulgence. After an appeal hearing has commenced, permission to amend grounds is extraordinary and will be granted only in limited circumstances where refusal would be contrary to the interests of justice. Relevant considerations include the importance of the amendment, whether the fault lies with legal representatives, whether fresh legal minds have identified an important new point, prejudice to the other party, failure to explain delay, breach of directions, and whether costs or conditions can rebalance justice.
• House v The King — relevant because the proposed amended grounds included discretionary error complaints, and the Court considered whether the proposed grounds raised a substantial issue capable of being argued on appeal.

🧠 Analysis

Issue

Should the mother be allowed, one week before the appeal hearing, to fundamentally recast her parenting appeal so that it could be determined on its true merits, despite prejudice to the father and wasted court time?

Rule

A party seeking late amendment of appeal grounds asks for an indulgence. The later the amendment, the heavier the burden. Where the amendment is sought in the shadow of the appeal hearing, the Court must consider whether the proposed new grounds raise a substantial issue, whether the change is properly explained, the prejudice to the other party, the effect on the appeal timetable, the interests of the children, and whether costs or conditions can remedy the prejudice.

The interests of justice are not one-sided. They include the applicant’s right to run the appeal properly, the respondent’s right not to be ambushed, the children’s interest in finality and timely determination, and the Court’s obligation to use appeal time efficiently.

Application

1. The mother’s proposed amendments fundamentally changed the appeal

The mother conceded that the further amended grounds “fundamentally recast and alter” the nature of the appeal. That concession mattered. This was not a minor refinement or typographical correction. It was a substantial restructuring of the appeal shortly before hearing.

The proposed new grounds shifted the appeal toward complaints that the trial judge failed to properly engage with the Family Consultant’s evidence, failed to consider evidence of the children’s exposure to conflict, made a material factual error about the mother’s position on Ms D’s role, unduly intervened in the trial process, and erred in treating extracurricular activities as long-term issues.

During argument, the mother abandoned the proposed ground concerning extracurricular activities. Further amendments were then made “on the run” to narrow Grounds 1 and 2. That increased the father’s prejudice because he had to respond to a moving target.

2. The father was plainly prejudiced

The father had prepared to meet the appeal as originally pleaded. The new grounds were served only one week before the hearing. His counsel had tried to respond quickly, but fairly told the Court that more time was needed to properly consider the amended case.

Campton J accepted that the father would suffer prejudice if leave were granted. That prejudice was compounded because the proposed grounds were being refined during the hearing itself.

The father’s fallback position was practical: if leave were granted, the appeal hearing should be vacated or adjourned so he could respond properly. The Court accepted that fairness required that course.

3. The mother’s explanation for the delay was weak

The mother’s solicitor’s affidavit did not adequately explain why the nature of the appeal was changed so late. The evidence suggested that when the appeal date was allocated, the mother’s original counsel was no longer available. New counsel was later briefed, reviewed the appeal material, conferred with the mother, and identified problems with the existing grounds.

Campton J accepted that new counsel had acted diligently once briefed and had “burnt the midnight oil” to prepare the new appeal documents. But the steps taken over the preceding month to secure alternate counsel were described as opaque.

This created real disquiet. The delay that produced the late application was not satisfactorily explained.

4. The existing appeal grounds had significant problems

One important feature was that the mother’s new counsel properly conceded that the mother would face significant challenges succeeding on the grounds as previously pleaded. That helped explain why amendment was sought.

The Court accepted that the interests of justice required the appeal to be determined on its true merits, not on defective grounds that may have obscured the real complaint.

That was the factor that saved the application. Although the delay was unsatisfactory, the Court was persuaded that the appeal should be heard on the grounds that properly captured the proposed challenge.

5. The interests of justice were described as a two-way street

Campton J made the key balancing point: the interests of justice are “at least a two-way street, if not a potentially busy intersection.”

That meant the mother’s interest in running the appeal properly had to be weighed against:

• the father’s right to a fair opportunity to answer the amended case;
• the children’s interest in the parenting appeal being resolved promptly;
• the public interest in appeal dates not being wasted; and
• the Court’s obligation to conduct appellate litigation quickly, efficiently and inexpensively.

This is the heart of the decision. The Court did not reward delay. It allowed the amendment only because the prejudice could be managed by adjournment, timetable orders and costs.

6. Costs were the price of the indulgence

The mother accepted that if she received the indulgence of leave to amend and an adjournment, she could not reasonably oppose paying the father’s thrown-away costs.

The father’s costs were fixed at $15,241, calculated by reference to his costs schedule and the scale under Sch 3 of the Rules. Payment of those costs by 24 September 2026 was made a condition of the leave granted to the mother.

That condition is important. The Court balanced fairness by allowing the mother to run the appeal properly, but making her bear the financial consequence of the late change.

7. The substantive appeal was adjourned

The appeal hearing was adjourned part-heard to 29 September 2026 at 10.00 am by Webex.

The mother was given until 30 July 2026 to file her Further Amended Notice of Appeal, Amended Summary of Argument and Amended List of Authorities. The father was given until 21 August 2026 to file his Amended Summary of Argument and Amended List of Authorities.

This preserved the father’s right to answer the amended grounds while keeping the appeal within a defined timetable.

8. The further evidence application was deferred

The mother also sought leave to adduce further evidence by affidavit affirmed on 14 July 2026.

Campton J did not decide that application. Instead, the further evidence issue was adjourned to be heard with the substantive appeal on 29 September 2026. That was sensible because the Full Court hearing the appeal would be best placed to decide whether the further evidence was admissible, relevant and material to the amended grounds.

Conclusion

The mother’s application was allowed in part.

She was granted leave, conditional on paying the father’s costs of $15,241 by 24 September 2026, to file a Further Amended Notice of Appeal, Amended Summary of Argument and Amended List of Authorities. The father was given time to file responding amended materials.

The substantive appeal was adjourned to 29 September 2026. The mother’s further evidence application and any remaining costs issues were also adjourned to be heard with the substantive appeal.

🧠 Take-Home Lesson

This case is a strong example of appellate pragmatism. The Court will not lightly allow a party to rewrite an appeal at the last minute, especially in parenting proceedings where delay affects children and wastes scarce appeal time.

But where the existing grounds appear to obscure the real issues, and the amended grounds may allow the appeal to be determined on its true merits, the Court may grant leave — especially if prejudice can be managed by adjournment and costs.

The practical lesson is clear: late amendments are expensive. A party who changes the appeal case at the last minute may get the indulgence, but the price can be immediate thrown-away costs, a strict timetable, and judicial criticism for the delay.

This is not a merits win. The mother did not win the substantive appeal. She won permission to run a better-framed appeal later.