Hip Turn

My daughter just made the girls varsity golf team as a freshman, after beating the entire girls golf team by 4 shots.  I've been coaching her myself, and never really got to technical with her, other than basics:  grip, stance, alignment, aim, takeaway, etc..  never have been one to worry about things that normal instructors deal with.  Angles, Planes, Position, etc.

Anyway, her HS golf coach is trying to tell her she does not have enough hip turn, etc...  ala Paula Creamer, Gulbis, etc...  I do agree her hip turn is not full and is small compared to others, but she does have a good coil and fires thru the ball really well, as compared by her distance and ball striking.  Her body type (thick) just does not faciliate a big hip turn.  I've look at some comparable LPGA video and would compare her to Cristie Kerr, etc.

I told her this evening if the coach brings it up again, that for her to politely mention that maybe he could talk to me about it as she does not feel comfortable making swing changes without me.  I'm going to email him tomorrow, as he has mentioned to me he would like her to change an item, etc.. and I told him I would work on it with her.

Am I off base here?

Thanks for any feedback