[Luckily for Rebecca, he hasn't gone to bed yet. He's getting to that point though, eyes threatening to slide shut at the slightest lack of provocation and if she hadn't knocked in that exact moment he probably would've passed out all over his notes.
As it is now that gentle knock shoves him back on the right side of alert and he rubs the exhaustion out of his eyes before going for the door. Cue look of utter confusion.]
Hey... Rebecca. What, uhm... what are you doing here?