If he's looking for any such trace, he doesn't find it. Leia looks like she always has. Perfect. Stubborn and young and beautiful and unwilling to show that she's scared, even if she is.

It's hard to put himself in her place; can't imagine what it would be like to learn an awful truth like that. But, then, her entire understanding of family is unlike his, of course he can't imagine what it would mean. She can't seriously believe she's at all like him-- that Luke is at all like Vader-- right?

He reaches up to brush his thumb over her cheek.