"Couldn't she have been sealed off by herself?" It seems like the obvious solution to the book, though she isn't sure why. "It's good you're here now, I'm happy to meet you, but you must have had better things to do."

She frowns, thoughtful. "What does she do? Is there any way I could help?" The offer's genuine, but she's also trying to find ways of defending herself against the witch without admitting that she's concerned.