I received a copy of this book on Netgalley in exchange for an honest review. 
 First of all, this book is a LIE (I'm hella overdramatic but it's true). Baby Doll is not similar to Gone Girl or The Girl on the Train in any way, shape, or form. I seriously couldn't make a single connection between the three books. So if that's your reason for reading Baby Doll, prepare to be disappointed. I don't know why every book insists on comparing itself to GG or TGOTT, but it's always, 
 always 
 a disappointment. I enjoyed the idea of Baby Doll; whenever I watch shows like Criminal Minds or CSI, I always wonder how the victims could recover from the trauma they experienced. So, the fact that Baby Doll mainly focused on the 'after', was a plus in my books. The main thing that bothered me is how Lily seemed to recover a little too quickly from everything she endured. Two days after escaping and she's basically completely fine? No nightmares, no PTSD, nothing? Nah. Same with her daughter, Sky. Sky has literally never seen the outside world. She hasn't seen the sun, the air, the snow, the people, etc. etc. etc. She asks maybe two questions (in the entire book) about the world before getting bored. Also, their physical injuries should have been way more debilitating. Lily hasn't seen the sun in 8 years and there's only a brief mention of wearing special sunglasses before the whole idea gets completely forgotten. They're also malnourished, but that's also barely a topic of conversation in Baby Doll. In fact, Lily eats an entire meal of Mexican food a few days later, because screw listening to your doctors. There were lots of small things about Baby Doll that bothered me, but the health aspect was the main concern. Everything else in the book was just meh. The ending was satisfying. That's about it.