I'm still not sure what parts actually happened, or what was solely in the mind of Ruth, the book's unreliable narrator.
A great read. The writing is excellent, the characters feel developed in the first 50 pages. The atmosphere is unsettling, though at first it's quite hard to pinpoint exactly what seems so off.
This would be a great book if it was from an experienced author; the fact that it's a debut makes it so much more impressive.