JS,
I'm trying to get a handle on what "I/R" means in terms of a specific arm/hand/ball path. We've changed a lot over the last few times we've thrown, so I don't want to totally re-structure her delivery in such a short time span. I'm curious about the football thing......does that mean you advocate a bullet spin? We've been working with a four-seam grip, and when she throws it right she gets good 12-6 rotation. Occasionally, by accident, the bottom will fall right out of it.
I am glad she is not doing that back and forth two-step, gym step. Just like 80 percent of elite pitchers, who don't rock. Good start there. The landing is not confident, and you can't have whip without front side resistance. If you have the resistance the whip happens pretty naturally.
As far as keeping your hand inside... as opposed to hand behind:
Yes, I don't mind bulletspin. In fact... in beginners... it's exciting stuff. Tells me that they will progress much faster in the early stages. Keeping your hand inside does not force bulletspin... providing you allow your forearm to pronate... when it wants to: at the rear leg. To me..this natural pronation is the release...and as such, creates great spinates and a 7-1 (or 1-7) axis (on a righty). To me, this is more desireable spin.
The football throw will teach her this new feel...as the only way she can spiral spin it, is to release inside the ball.