"It wouldn't have to be all of the time. I couldn't ask you to give up being a mer." Lucy also knew she couldn't give up her ancestry, especially while she was just beginning to really understand it. "Just some of the time. I suppose we could keep asking them each time. But it would be nice to be able to control the change, you know? So we can be spontaneous." She smiled back at him. "Spur of the moment trips through doors and anything else we want."