The start of this was somewhat creepy, but after about 20% nothing is scary and the book could hardly be described as a horror. I would say it is more lukewarm fantasy? Or more simply, a story about a depressed alcoholic getting annoyed by a skeleton. 
Josie started to become annoyingly obtuse and short sighted around the 60% mark. Until then her actions and thoughts had felt in character, but then Meuret just went overboard with her stupidity to unrealistic levels. 
Before this 60% mark I'd say it was an ok book, but it really lost it from there. The ending was a massive flop - I was just bored for the last 25%. Nothing interesting happened, it wasn't emotive, and everything started to be told to us rather than developed naturally - it was all very flat and one note. The 'action' at the end was very wishy-washy, and the supposed high stakes didn't feel so at all. Things weren't explained very well and I wasn't convinced by any of the characters motivations for their actions.
It's sad because this book started out pretty well with an interesting concept and had the potential to include an interesting exploration of human nature, but I think the story got away from the author after the first 20%.