It's neat to see them both "let it happen," but Faith's unique voice has lost me here. Is she saying they should have sex because she's figured out that odds are she at least is not going to survive this captivity? And if so, is this some kind of absolution she's giving him (as well as general stress relief), knowing guilt and how it chokes you as she does?

When you go back on rewrite, and I hope you will because this is a wonderful story, you might try to clarify all that a little more.

But the mix of tenderness and desperation here is really powerful. well done.