I think both. She has a disease or even several possible diseases that, in combination with sports, can cause new injuries. Or maybe because of the diseases/growth, her bones are weaker and it is more difficult for her to maintain a shape without getting new injuries and problems with the tendons/bones.
Right now, her doctors said she can jump, but she isn't doing it. She's trying to get the body more time to heal before the start of the new season.
But they both said one thing, that if there is a desire to continue. That she can try to do it. And she wants it.