"...and a whole lot of front toss to see what works and what doesn't"Thanks for all the replies. I definitely don't want to make any big changes for fear of making things worse, but am always open to little tweaks that could improve things. She's never been to a hitting coach, just a lot of us watching videos, using this site, and a whole lot of front toss to see what works and what doesn't. She prefers the ball to center (or maybe a touch right center), but can turn on a ball like in the first clip, and hits well opposite field like in the last hitting clip. That pitch was a low outside change-up that I was a little surprise she was able to put over the fence.
Probably the best and most effective thing you can do for her
"That pitch was a low outside change-up that I was a little surprise she was able to put over the fence."
Why were you surprised? Does she normally struggle with that pitch?