Suggest Treatment For Distal Fracture

Our daughter her wrist has ben operated 5 days ago. She had a distal fracture with a growth in a 37 degree radius. They placed the bone back in place filled the free space with her own bone and artificial bone and placed 2 k- wires.
Her cast will be renewed in 2 days after x-rays. Now I want to know if she will be fine flying for 9 hours as I am concerned what cabine pressure might do to her wrist. She is 8 years old.
Please advice
regards Sharon