I'm having trouble visualising exactly what your problem is but if you are still working on getting her to reverse round your leg when you are standing still you could try getting her to reverse round you as you turn with her, then stand still and get her to reverse round you, then get her to reverse round one leg, I think that is how I showed Zac what I wanted.
OR
I videoed this for you hoping it would help. Possibly she might be mixed up a bit with peekaboo thinking the trick is over once she's backed through?
With these click and reward locations she is thinking movement because she is moving when the click happens and then after the click she keeps moving to get in the reward location - which is also where you want her to be for the next step backwards. If a dog is going to stall you want it to stall beside you as your next step cues movement without you falling over the dog. It would have been a LOT easier with Gus if I'd had move space but he got there in the end. I thought he knew a bit more but he behaved like I'd never done any reverse weave with him before
Let Leaf muddle about a bit to get in the right position to be rewarded, I mean lure her and encourage her with your voice but don't physically guide her. Even if she goes backwards and forwards and spins or whatever while you are luring her let her figure out where she is going to be rewarded each time. Then she'll find the fastest way to get into that position.