That's a weird choice for a cover, btw, poetic as it may be.
When we meet Sophie Winters she's in rehab against her will and has survived a life-threatening car accident, addiction to painkillers related to the life-threatening car accident, and the murder of her best friend. Sharpe shares the story with us in two narratives, one being the linear present and one the nonlinear past.
I wasn't sure I was going to finish this book, but the mystery element is compelling. A big secret is revealed about halfway through that justifies some stuff you might have previously found hard to swallow.
I wish I took notes when I was reading, because sometimes I think deep thoughts about books and forget to share them here. I don't really wish that though, because I don't want my reading to be about writing reviews.