Berete shrugs. "C'mon. You can stay in some corner of the servants' quarters nobody's used in twenty years."

It does prove to be the case, when she leads Aya there, that the servants' quarters have about twice as many empty rooms as occupied ones. There are plenty of available corners. She installs Aya in a tiny room just about big enough to contain a bed and a lamp, and leaves her there with the instructions, "Don't go anywhere. I'll collect you in the morning."