Klaus simply nods at that, his eyes quiet on hers, a slow, steady nod that means I know, and that means you know, too, you know why it was the best option. It's acknowledgement, but there's nothing he can do to make it better if she doesn't know what he should be doing, if she doesn't tell him.

It's the first time he wants to make it better for someone he's killed.

Well, for someone whose neck he's snapped, anyway. He didn't kill her, but he knows what she means and it isn't the time to play on words - or maybe it is, but he doesn't because he trusts that she doesn't need that much, that she knows that much already.