abused women nearly never want to leave the abusive husband. so do the abused children. you always hope it will get better, because he is so nice sometimes, you always think it will get better because you yourself will 'be' or 'behave' better and not 'anger' him anymore... the behaviour of the adults around teenagers and kids builds patterns for what these kids learn to accept as 'normal' and 'healthy'. she is learning a lot about the meanig of "to care for someone" or "to push someone" or to "coach someone". i really do not know if a sport is worth this. at the very least talk to her about it and make it very, very, very clear that the coache's behaviour is totally wrong and not acceptable at all.