Welcome! I will echo some of the things already said and try to pop in a few additional points.

Your daughter does have youth on her side. Many of the research articles I have read have shown children bounce back faster than adults. I live in Pittsburgh and since the show Dance Moms was/is filmed here we hear a lot about these young dancers. There is a girl who suffered from CRPS at a young age. She was in a wheelchair and now she is dancing all across the country!

A good pain management doctor is a very good thing to have. You may want to ask about a pain psychiatrist to help as well. Whatever the diagnosis this may help her (and you) deal with all the chaos that is going on.

Good luck and don't be afraid to ask questions!