He stays awake for a while, listening to her breathing and ensuring that she doesn't wake up as soon as she's drifted off. But even if he might have liked to stay awake to watch over her, sleep doesn't tend to be cooperative, and he soon finds himself falling back asleep.

When she speaks, he's only partly aware of the fact that she's being spoken to, not asleep but not awake either. He just breathes in deeply, his whole torso shifting with it, but doesn't move.