Bishop, you say 5 of the 6 pitchers you coach can keep contact with the pivot foot. Then you say "It's not physically impossible to comply with rule, it's not even difficult." referring to keeping contact with the pivot foot. Apparently, for one of your students it must be difficult.
Nice claws there Tojo, do you have bit teeth too?
It wouldn't be difficult for her to fix her crowhop if she would excute the drills she's been shown to correct the mechanics causing the problem. Since turning 13 it seems I, her private coach and her parents have developed a case of the stupids and aren't worth listening too. I can show her the path, but she still has to do the walking.