[Some apprehension visibly leaves her; her shoulders drop forward and her smile pulls a bit wider as Tifa admits that she, too, is a little lost about how to do all this.]

I definitely think you're right about that.

[She exhales, dropping a hand to rest against her hip.]

Even if I think I might be a strange choice for this kind of thing, if it wasn't obvious, I'm all in. It means a lot that... I mean— thank you. For asking me. I know it's not something anyone offers lightly, and... you've been a great friend to me. I'd be glad to be a part of this.