The Nesting by C. J. Cooke
Lexi Ellis, a young woman with no place left to go and no one left to turn to, impulsively steals another young woman's resume and applies for a job as a nanny. She'll be living in an isolated house in Norway, taking care of a widower's two daughters while he builds a high concept house hanging from a steep cliff. She knows that what she is doing is a bad idea, but she's immediately drawn to the two little girls who recently lost their mother.
Overall, I enjoyed this book. Haunted houses always appeal to me and there are some chilling scenes with muddy animals prints in the house and an apparition one of the girls describes as "the sad lady." It includes an intriguing mix of environmentalism and folklore, along with the fact that Lexi is trying to determine whether what she sees is supernatural or a hallucination brought on by her mental illness. She's a likable character who took the job out of desperation and is doing her best to be a good nanny to the children. I did have a hard time accepting the author's description of the young children and the rigid academic schedule they're supposed to be keeping, to the point that I had to stop and look up whether 9 month olds can drink almond milk. (It's not recommended.)