[Unlike with Luca, she doesn't actually doubt that.]

No, I believe you. [She smiles, even, though it's just a small one.] You have the same type of selfish mindset that I do... It's a risk worth living for rather than dying for, if that makes sense, and when you have your mind made up you'll do whatever it takes.

[Rin says it like it's a good thing, and to her it very much is. Sometimes she wonders if it's wrong to think that way, but she can't change her personality.]