Don't worry, once she graduates in May, I'm going to greatly reduce my interactions with her. I tend to just ignore her nowadays. The only reason I'm still around her at times is that she is friends with most of my friends. She's dating my best friend as well, although he has been rather apathetic and unwilling to talk about what happened; I'm starting to not think of him as a friend either.

Thank you for the link, Mrs. D, I will check that site out later, for sure. Psychology is my major in college, so I'm already somewhat familiar with the traits and behaviors of a narcissist (and the girl in question fits them to a tee). I definitely won't let her get close enough to hurt me again.