Elizabeth has noticed, though she doesn't worry overly much due to her own sulkiness.

"If we're close and this is what it's like where Jack is," she says, glumly, "then I hope he won't argue much when we use the Pearl for firewood."

This is, of course, completely ridiculous, but Elizabeth reflects that it's very difficult to argue when one is unconscious, and spends a moment contemplating the myriad ways to tell Jack he's rescued before hitting him over the head.

Surreptitiously, she moves her hand under a spot of blanket recently made warmer by a spell.