[He just nods. That makes sense, what he knows of her clicking into place. Why she can care so strongly without the same kind of consequences that he can see in the future.]

So you wouldn't want to go back. [It's less a question than a statement, to clarify what she'd said.] If we can solve the mystery of this planet and find a way to return to the places we were before arriving here, then... you wouldn't want to leave?