DD went to an open gym workout. She is a freshman, she throws 56 - 58 fastball, she throws a knuckle change 37 - 39, she has been very successful with this pitch, she can spot it 85% of the time. The high school pitching coach shows up to the workout, watches DD throw and tells her she needs to switch to the back hand flip change up her change up is too fast. She plays for an 18U team and again has been successful with the knuckle. what do we do??