"I'm afraid we have four. There's no escaping it." Unless you were Headmaster, but ... even then, there was Peeves. He suspected Dumbledore had only escaped notice because he had genuinely not cared at all what Peeves did to him or his office. "I would say you ought to direct any complaints to me, but I'm quite certain there's not a damned thing I can do about any of them."
He didn't look away; that urge had left him a while ago, and this way it was so much easier to watch the way her face was changing, moving. He smiled very faintly. "It is. Even though I'm a miserable gossip, apparently. You're welcome to come sit for it any time you like."