My granddaughter is a freshmen in high school and has worked extremely hard on trumpet. She reads well and has a great tone quality. Her problem is her range. Anything above G above fourth space C she just can't play. She says her teeth even hurt when she tries. Endurance is not happening. She gets a bad red ring on her upper lip. I've asked around and the consensus is that she is putting way too much pressure on her upper lip. They tell me there is no muscle there and that she needs to learn how to place the mouthpiece so that the weight rests on the lower lip. If any of you guys have some suggestions on what might help, I sure would appreciate it. I suggest just shifting the weight to her lower lip but she says she can't play that way. I've encouraged chromatic scales gradually pusning her upper register. I'm kind of at a loss to try anything else. Thanks in advance for any and all suggestions.