Beth, have you heard of a place near you that does sports training? We have a few places here in Georgia that have baseball specific training programs and follow the teachings of Eric Cressey. Maybe you could even email Eric and ask if he knows of a place near you.
These places aren't physical therapy places they work on evening out any imbalances a kid might have that could lead to injury. This is the place near me http://www.rapidsportsperformance.com/