Ok, after video I believe it confirmed what I was thinking originally. Front side/shoulder opening too soon. Have her hit one handed with the front hand, off of a tee.. Stress hitting the ball back up the middle. If the shoulder opens like that during that drill, it is impossible to hit up the middle. Like I said before, it takes a little time to master this one, but it worked for my dd.
Thank you, it seems a few of you have come to this conclusion. Most of the issues regarding solid contact is relating back to the front shoulder.