Thanks petriccia,
We know the back foot coming up is a good thing, but you are exactly right when you say she is picking it up and moving it herself. We have talked about the actual momentum of the hips should be the reason the foot is pulled off the ground, it just hasn't set in yet. We have a coach we use and he is working on getting her to start the hips before the hands. Hopefully when she learns to create that torque the rear foot movement will come along with it. We scrapped her old swing about 3 months ago and started with this one. We are pretty happy with the progression knowing we still have a ways to go.
It looks to me like you are on the right track. I agree much more with the coach you currently have working with her than the other local coaches you mentioned. Honestly, for her age, she is off to a very good start. Good luck!