I really enjoyed this book. I found it claustrophobic, complicated and compelling. I'm torn between thinking Lizzie is mad and bad on one hand and mad and misunderstood on the other. She is certainly in the driving seat in this story and you read it watching the events unfold in her mind. The house is a physical embodiment of Lizzie's internal world. It's through this and Lizzie's dysfunctional interactions with others where you get a sense of her impairment and that of her family.
I really enjoyed Schmidt's writing. The sinister hints she drops hit you like a bolt out of the blue. Her writing dances around the ultimate question of who 'dunnit' rather than spoon feeding it to you. It's an excellent and mature thriller.