Complete drama stopped my ability to comment to this, but I'm all yours now.
Alfie was there. He'd actually been spending a lot of time there - frustrated and angry and scared and not really sure who in his dorm he could go to with that sort of stuff, since it was so far off from where he usually was. And he didn't want to scare his sisters any more than they already were.
So he spent a lot of time alone in that classroom, because it was cool - there was an old sofa, and tables with weird forgotten things. He liked it.
He was slumped on one edge of the sofa, staring distractedly at a letter, when the door opened and he jumped a little, worried he'd be in trouble until he saw who it was. Then he grinned a little, despite himself. "Hey. Hey... what's up?"