[And Zuko isn't used to having enough friends for one to ask the other. She frowns, considering not answering, but fine, okay. What should a person know about Rin?]

...she's half-demon so she's got a tail. As near as I can tell, demons are like spirits except she says most of them are a lot more violent. Rin isn't like that, though I guess she used to be. Something we have in common.