The girl was not just standing there. Obviously she was considering whether or not to do it. She rose to her toes and then went flat footed again several times. Finally I couldn't take the suspense. "Jump!" I yelled, and she did. She rose a tiny distance, not even enough to begin a flying fantasy, and then the drop began. I don't have any guilty feelings - she had free will, she didn't have to do what I said. But really, should I have gotten involved at all?
As it was, she managed to jump the rope a couple of times before getting tangled up and having to try again. I probably should have yelled "Skip" instead.