I have a student that I have been training since seventh grade. She is now going into her senior year at school and has become a premier pitcher in our area. She transferred to a private boarding school last year out of state, so I have not been seeing her regularly as in the past. When I finally did see her, she had developed a crow hop in her motion. She throws hard and has great stuff, but anything with weight back now has a crow hop. I have tried a few things to see if I could mitigate it, like shortening the stride or lowering her body elevation as she strides but it has not worked. Anyone have any other suggestions? Any exercises that could help would be appreciated.