two of my best friends are currently Tri delts at tcu, one is a legacy and the other isn't. Of course legacy's play a huge factor in every rush process (or so i've heard) but it doesn't garentee a spot. The one who isn't a legacy to tri delt was a legacy to pi phi and she was cut by the second round (or something like that). I do know though, that recs. are EXTREMELY important at TCU, b/ my friend was not invited back to half of the sororities because of her lack of recs.
GOOD LUCK IN HER RUSH! TCU has a great greek system!