Anything I can do?

I have a client who was supposed to take her family to Disney this past February (2025). United tickets were issued August 15th 2024. Her grandchild got very sick so they had to cancel the trip. He is doing better now and they would like to plan the Disney trip for February 2026 but travel must start by August 15th in order to use their previous flight credits. They cannot afford an additional $2,700 for new flights after paying for the child’s hospital bills. Is there anything I can do?? I feel so bad for them and I would really like to help.