"We're great friends, yes," Rhydian said, with a broad smile that belied some of the uncertainty that had come from his last little heart-to-heart with Essery. He was a touch worried about her, really. "It's been different, having her spend most of her time at Hogwarts. But she does get out on occasion, obviously. And your brother - have you just got the one?" He almost never felt that he didn't know someone well enough. It had made problems for him in the past, but there it was.