It is frustrating when this happens, I see it all the time, perhaps it is human nature and they don't intent to behave this way, the best way to go is maybe encourage your daughter to work hard and try her best (she might already be doing that) and if she needs help perhaps she can ask the coach herself. My daughter has decided that (in her own words) that it is not a good idea to be the "golden girl" and just work hard and get in with it, you will be surprised what the coaches notice, I thought the coach didn't always take much notice of my daughter but found out I was wrong as when I was having a chat with her a few days ago she said that my daughter is very grown up for her age and that she was a hard worker and always listens.