That "girl" was Izzy, the National Champion in the 800, 1500 and the 3000. She is a very cautious respectful runner who had a clear lane when she passed your daughter who tripped Izzy and thus they both went down, watch the video. If there was an issue you should have filed a complaint for a review of the finish, but since they simply got tripped up I assume this is the reason you decided not to. Izzy is an incredible athlete who cares about all of her fellow competitors so please hold back on the slander. Have a good track season.