Midnight's Links
She does talk a lot with him and being annoying in purpose, even trough she seems to not show but she actually cares about that he doesn't seems to be able to socialize properly with others and kinda tries to help, maybe she was the one pushing him to talk to Marius at the beggining.
Despite not talking to her at all she is the one who does talk to him and kinda being annoying as hell at times, he sometimes prefers being alone but he still likes her precense. But at same time he is concerned about her psychopatic side.