I agree with AOII Angel...she shouldn't second guess, although I'm sure it's natural because we all like to think we earned something based on our own merits, not through connections or obligations. However, that's kind of the deal with being a legacy. We had two sets of sisters in my chapter. Frankly, in both cases the younger sister had a more attractive personality and got along better with the rest of the chapter.
Last year, my daughter's roommate was an in-house legacy. She was also a legacy (mom) to the sorority next door, who cut her early on. Mom was OK with that, because she knew it wasn't the right fit. Legacy knew she would like her sister's chapter, and really had her sights set on it all week (plus, Pi Phi has that really neat legacy badge
). I don't think she second-guessed it at all...best of luck to your daughter!