Ulla shakes her head, smiling. "Not at all. Transformations hurt, and they're hardly worth doing unless I plan on staying in one shape for more than a day. I once spent three months in human form, in my own world. Here, I usually miss the water after a week or two and change back."

A pause, and then she adds, "If I spend more time in human form than I have been lately, it isn't entirely because of you, or this. I'd stopped changing when the button appeared in the warden lounge. Because it would kill me if I were mid-transformation when it was pressed. But I don't have to worry about that anymore, and I like having legs some of the time."