So is there a switch you can flip to turn them from wild with the occasional strike thrown here and there, to corner burners and racking up the K's? And when they get to 16u it magically all comes together???
One day for my DD it just finally happened. Suddenly I was hearing the sound of ball hitting glove instead of the ball hitting backstop. I remember the very day. I was warming her up to go into a game and I usually had a bucket next to me so I wasn't chasing balls between every pitch. I never pulled another ball out of the bucket. She pitched 2 shutout innings and struck out 4 with no walks. She's been hooked on pitching ever since.
Keep at it.