The first thing she notices is that absolutely nothing hurts.
She wakes up, remembering a wonderful soft cozy dream in blurred contentless fragments, and in the base expectations set in the foundations of her mind she expects waking up to hurt, and it doesn't, it doesn't at all.
She rests for a moment, luxuriating in the simple absence of pain. Then she stretches, wincing preemptively; but she didn't need to wince. The pain isn't there. The pain still isn't there.
She opens her eyes.