Thanks everyone for the comments. DD trains 8 hours per week, but will move up to 15 hrs for the next level in the summer. I will ask the HC about a flexibility routine every day vs manual stretching. I don't mind reminding her about it at home, but if that is the expectation form the coaches, then perhaps someone should have said something. When DDs coach said her way was the only way, it raised some red flags since DD is really not that inflexible, she just needs to keep working at it.