He's relieved that it works, and he hopes that sleep will help her process any of what she's learned today. A part of him is tempted to stay until she wakes, but that isn't what she'd asked, and he does understand the need to have some time alone in the wake of that news.

He makes sure she's comfortable, adjusting her position as she falls, and pulling a light blanket over her after. And then he leaves, like he said he would.