My DD earned the chance to call pitches her Soph. year and has owned it since. Her coach is former D1 pitcher, so she knows a little about pitching. DD went to the coach after an inning where the pitcher was rocked, suggested some pitch sequences based on batter behavior, in the box, and swing, and was given the chance. DD can remember what pitch the hitter missed, drove, and went deep every at bat throughout the game.
Maybe if she has the chance for conversation that shows a willingness to learn and also an understanding, she can gain her coaches trust.
Being a pitcher, teaching pitching, and calling pitches are three different things, and being good at one does not necessarily mean you will excel at all 3. Michael Jordan was a great basketball player, but flopped as a head coach...