I figured Mergo would have been at the apartments for a good while, if not from the very year it opened, so she would be a pretty longstanding figure in the community. Granted she's pretty laid back, and a bit off putting, so any older relationships can be as close or distant as you'd prefer. She also has a fascination with observing people, which can sometimes give off stalker vibes (especially since she can come into your apartment and watch you while you sleep  :P) so if anyone wanted to have a history of boundary issues with her I'd be down for that as well.