so i take it she is breaking too early.  very common at that age (and most so it seems...lol).  i have had to spend a great deal of time teaching kids about not breaking too early, and practicing throwins to teach them to be patient and to wait until the person throwing in has set up their position.  try doing basic drills of backline thowins and everytime someone breaks too early the whole team goes for a run, or does push ups.  its amazing how much quicker they start learning when the consequence is that...lol the other option you could do is set up the WD on the throw in side of the circle so that she is another option for it and have the C in the center third ready to offer the last option with a hard break forward.