[Reiner nods. He's fairly certain he knows where Aubrey is going with this; unlike Bertholdt, he isn't shocked by the idea that those brought to this world might have some influence on it.]

I've seen what you and Eren can do. Can't say that I've quite figured it out myself yet, but I'm making progress.

[He realizes that this admission might feel like a violation, but...wouldn't it be just as bad to not tell her at all? Reiner doesn't know. He's never been good at telling the difference between right and wrong.]