I was able to get some video over the weekend.
She has taken lessons and each instructor has helped her improve and overall she has had a great experience. Her goal is really just be able to participate at the high school level and feels like she needs to be able to throw a little harder to have a chance. Any thoughts would be appreciated.
-At the start of the pitch, it looks like the left leg is not contributing much to the push-out. Possibly a quad dominance vs glute dominance issue if you want to go down that rabbit hole.
-At 9 o'clock there should be more bend in the pitching arm. I believe Rick Pauly suggests 135 degrees at that point, best I can tell she is at 160 degrees at 9 o'clock. This would give more whip.
-At 6 o'clock her hips are clearing the path and the back toe (right foot) looks to be more of an anchor rather than turned in with the shoe laces facing the catcher
Those are what I see and are not listed in any particular order of importance.