[A sigh; in theory, sacrificing oneself for friends and family is the noble thing to do and even Lightning would do it to protect her, but she's also been on the surviving end, and it sucks. But try convincing Xion of that.]

She might, if you tell her we weren't human either for a while. I'm not sure, but I think she thinks she doesn't have a right to live because she's not as human as her friends.