Most people we encounter think we are nuts and I am ok with that. This is my experience anyhow.
2.) You may find out that the coach actually does throw correctly but doesn't teach what HE/SHE does. If so, you can review the film with the coach and encourage HE/SHE to start teaching your DD to pitch they way HE/SHE throws the ball.........This may force the coach to re-think HIS/HER teaching methods. Maybe you can create an I/R coach in your area for the benefit of others!