I was wondering at what speed girls are or can throw a flip change. My DD can not get enough speed added to her flip change to be as effective as it use to be. As her normal speed has increased the change is just not increasing. And we are at 20+ mph difference in her fast and change. Batters now have time to reload and square it up. I’m just wondering if you can throw a 50mph flip or it’s time to move to another change up.