Sirius lazily wrapped an arm around her, letting it drape over her shoulders when she leaned up against him. He was amused and pleased to see that she was just as messy as he was, but then, he wouldn't expect anything less from her.
He grinned wryly when Sirilla mentioned that she was in the Slytherin dorms. He knew he had been really lucky to be in the Gryffindor dorms. It had been just like coming home for him in that regard. No having to adjust, to having to pretend about a house that wasn't his. He couldn't imagine being in Slytherin, not now, not after everything that had happened.
"They had a lot for us to do here too," Sirius remarked -- maybe the scientists enjoyed Hogwarts too, if their activities and the length of time spent here was anything to go by.