Sounds like she isnt keeping her weight back on her back leg? Get some Tee work in and some one on one coaching to point out each time what it looks like she is doing. If she has multiple issues fix one first then move to another. Dont try and fix them all at once or it will likely be too much for her. Hands (butt of bat) to ball first then roll wrists. Really focus on her needs while practicing after all thats why we practice.