DD is a lefty. She is very comfortable with having a backswing but it goes way behind her back. Shoulders not even close to being square with the catcher. She has a tendency to always stride way over to the left (worried a little on this because sometimes part of foot outside pitching box). Surprisingly, she still has pretty good control. She was told by pc to not get rid of backswing over a year ago - try to keep knuckles forward. She said she has been trying but arm always goes to the same spot - mind block. Time to get rid of or keep on working?