** spoiler alert ** 
 Wow. 
 I stayed up waaaay past my bedtime to finish this. There was no way I could put it down. 
 Seven days, and such a transition for Sam. It's hard to believe she's the same girl from Day 1, but at the same time, it's 100% believeable. 
 Sam's thoughts on her friends remind me of my thoughts on my friends exactly. I love the quote from, I think it's Ally, on the day when Sam & Lindsay were fighting. Sam's telling Ally everything bad she said about Lindsay is correct. Ally's like, "Yes. But she's ours." (Paraphrasing.) 
 I love the reflection, the space between the story. Very powerful. When Sam realizes that she hasn't been falling, she's been floating; or when she realizes it's not been dark, she's had her eyes closed: wow. Both moments made me catch my breath.