"On purpose," Greta repeats without comprehension, as if parroting a foreign language. She ought to ask 'how,' as that's rather more relevant - can she do it again? - but what pops out is, "Why?" Why on earth would anyone voluntarily leave their world behind?

… Well, there are a few reasons she could think of, all involving an extremely unpleasant home life, and she gives her head an appalled little shake. "Sorry. It's none of my business."