I believe the OP's story, and I don't think she had to have necessarily done anything to her roommate to cause her to write such a letter. C'mon, we all know how easy it is to no-rec a girl (some women on this very board have claimed to have done it) to our own sorority. All it takes is one no-rec and a girl (or girls) with loose lips to completely damage a PNM's reputation...especially for something as fragile as recruitment. Some girls are just mean, stuck-up little biotches who decide they don't like someone based on a very shallow reason, such as appearance. She didn't need to write a letter to all of the chapters - she only had to tell someone, or one of her friends who knew about the letter told someone, for it to get around to all of the sororities. When you're trying to sort through all the women going through recruitment, you're really going to give the benefit of the doubt to a PNM? Right. It's unfortunate for the OP that she ran across this vindictive girl.

I do have to say, though, that I think it's odd the OP would get any encouragement from DZ (I consider an invite back in successive rounds of recruitment to be encouraging in this case) if that's the one chapter the mean girl is a member of, and the source of the tension. OP, is it possible you were released by the other chapters because they sensed that you didn't want them? A LOT of women do that during recruitment, and it makes absolutely no sense...you want EVERY chapter to want you regardless of whether you want them back, and you should never be a sourpuss at a party because it's not your favorite.

If a chapter has done some research then I can understand listening to a letter. But it is a little scary to me that some of these chapters would just listen to the word of some random girl and base a decision on just what someone said..

Yep. Something's not adding up.