I agree on premise, but I've seen many parents with this thought process take it so far in that direction that they don't help, even when they could. I agree that we shouldn't be coaching each pitch and yelling out instructions about stride length and release points, etc. However, when you see one little key issue that is affecting each pitch why wouldn't you give them a cue if it could help? I've see it help dd many times when she was pitching and have helped other pitchers as well. I know one dad who created a number code with his dd. When she had a consistent posture issue or was slowing down on her change up or whatever he'd just yell "31" and it was a good cue for her to fix a minor issue without any discussion or elaboration and no one else even knew what was said. I think as long as you keep these cues to a minimum (not every pitch, not even every innning, maybe not even every game) they can really help.I'm trying to give some friendly advice, although experience tells me that you won't it see as such. But, here it is:
It is her show. It is her game. It is her successes and her failures, not yours. It is time to move on.
You have to learn to sit quietly and not interject yourself into the game.
The point of softball, and raising kids, is to create people who don't need you. If you've done your job correctly, she doesn't need your help.