Hello! Im 13 years old and a few years back i did a fly away off of the bars, & landed with my thumb back. I had all the same things happen, But i was NOT able to move my thumb or hand at all. My hand was shattered in three spots! Gymnastics is very dangerous. That same year i also broke my foot, The thought i had a broken growth plate. Truth is doctors don't know what the growth plates are suppose to look like.. Go take her to an orthapedic surgeon! They're fabulous. If they don't see a break, & her hand continues to hurt, get an M.R.I. scheduled because sometimes breaks dont show on X-rays! Hope this helps.
Hello!
At her age the healing would be very good. For any fracture to heal she would need immobilization and that is achieved by the thumb splint. After 4 weeks there would be complete healing.
Tell your daughter not to put undue pressure till the pain and inflammation subsides in the area of fracture. Follow up with the orthopedician if you have any further issues.
Take care!