I really enjoyed this book. I liked the POV switches between the characters, as well as the switching back-and-forth between the past and the present settings. McMahon created an intense build-up and a strong back-story, particularly with Sara. However, there were a few elements that left me unsatisfied. 
 First of all, the demonization of Auntie was a huge annoyance. Not only was Auntie from a different country who spoke different languages (French Canadian, but still), but the fact that she was the only non-White character in the book was a bit cringe-worthy. It really played upon the tropes of the Native person delving into mischievous practices and witchcraft etc. I wasn't too bothered in the beginning and middle for how she was written (i.e. helping the local women etc.). I would say that it's the ending where she literally is the villain in the story (the villain, ruining the lives of the white characters in the book), which really bothered me. 
 Furthermore, the ending was extremely anti-climatic. There was such an intense build-up through the various characters, and the switches between the past and the present, and for it to end so dully was a disappointment. 
 Regardless, It was an exciting read, and I'm glad I read it. Like most things, it does have its faults, but it's still a good book.