I was fine until the end. It's was trying so hard to be "complex" and to have a twist no one sees coming (like Final Girls). It ended up being messy, contradictory and untruthful to everyone but Charlie's perspective. Marge's perspective chapter should have been 100% different as should Robbie. Charlie herself is a very flat unlikeable character. Idk you can read it in a day, there are worse books.