I spoke to my daughter about this last night when I got home giving her an example of how the angle should look when she makes contact. I think she misunderstood the inctructor who was saying top hand to the ball and my DD actually was taking that to mean the bat should be level or going up. The part that concerns me is that the instructor doesn't notice the confusion and work to fix it, I may have fallen for the resume instead of the instruction. We are going to work on it tomorrow night I like the idea of a gatorade bottle tee.
Be careful with the gatorade bottle work. For a hitter who already has a tendency to drop her hands before launch, I'm not sure this is where I would start. A very low contact point tends to exaggerate the urge to get the hands down to the ball. IMO, learning how to launch the swing from near the rear shoulder, and keep the hands above the ball is where I would start on this issue (high tee work). Once that is established, I would then work on the concept of a diagonal swing plane for lower pitches. Just my 2 cents...