Snow has been a wreck ever since she met David in her dreams and she knows it. But she can't help it because she knows other things too – things that make her physically hurt, give her the worst feeling in the world. She knows that David can't leave that dream world without her help. She knows what it's like to be stuck there. And those are things that she just can't stand.
But then she's back at his side, leaning over him, about to wake him, and she wants to know – is this what he felt when he woke her?