That's at the crux of most of the problems. Expectations not being met. Coaches have to be really careful in what they say during the tryout period.
Coach says, "We really like your DD and the way she fields the ground ball. Our depth at middle infield isn't the strongest, so DD will have a good chance of playing there if she can prove herself."
What the parent hears "DD will be our starting short stop for the entire season."
Agreed. Also, "we will play a strong A-level schedule" and then you never see a true A-level tournament. Or, "we will play showcases and help your DD begin the recruiting process" and then none of that ever happens.