I'll also add that there are certain battles that are very difficult to win when it comes to demanding that players change certain things. These players do have TB coaches and private instructors. I'm curious what kinds of things that this one girl is rebelling against.
Simple stuff. I try to teach Wasserman/Kobata/NECC and they just go through the drills and then ignore them after. I know that at least some of it is my fault for not presenting it properly, freely admitted. I'm still very new at getting 13-year-old girls to buy in.
That said, since they only know me from rec, I think they assume that their TB coaches MUST know more and better stuff than I do. So hey, let's just ignore coach.
I am still learning, and I know that I could have salvaged the situation had I recognized it earlier. I just need time and experience and probably some help from the professional educators at the school.