When I was a subbie I didn't want to hang out with any of the older students. Subbies are so trapped in their own world on the third floor that, at least in my experience, there weren't many friends outside the Subfreshmen class. I would have just petitioned for a subfrenshmen lock-in, which to my knowledge, Mandy had already thought about planning. It seems that would have been more fun for subbies anyways.