I also found a large branch with leaves and dragged it behind her, touching her legs and such. Under her belly, etc.
Another hand walking exercise.
Drag ground poles in the ring. Get a sturdy rope, tie the ground pole and loop it once around your horn. Don't tie it. In case she panics, you can simply let go of the rope.
I led my mare with the ground pole behind, letting the taut rope rest on her rump. If you have leaves you can drag the poles through, even better.