If I had to guess I would say her timing is off.
Tee work is always the best tool for tweaking mechanics. I would have her swing the bat off the tee. Have her open her hips after contact as she extends the bat through the zone. She can break down her swing in steps or practice it at a slow speed and work her way into a faster/full swing.
My daughter ran into that problem at that age. She was hitting the ball inside out. Which means inside pitches were being hit oppo.
She picked up this tip from Coach Kelly I Perez at a UCLA camp.
I guess we did get something out of the $500 camp
Good luck to your daughter!