Silas hadn't noticed Laura until she nearly ran into him--he'd been too busy looking at everything else to look where he was going.

"It--it's all right, Mademoiselle," he said, as startled as she. "No, I have seen no children. Where, ah, where is here?" He looked around, obviously confused. "I left Ravenclaw, and now not only do I not know where I'm going, I don't know how to get back."