I wouldn't know, I haven't been here whenever this has happened before, so must have been somewhere between my leaving and returning. [but somehow it makes sense and explains the confusion too!]

Is there any way you could ask her? Or somehow go anywhere near her apartment to check? [Weiss, holy shit, she's not even your puppy!]

It better not be anything contagious, he's been spending time in the common room with everyone around.