Good acting by all. The villain both annoyed and creeped me out. For her part, she was a masterful manipulator and Sarah's desperate need for connection made it so easy. The most facepalm-worthy moments were how trusting Sarah became so fast. Even with her loneliness and trying to rebuild the trust with Mark her husband, Helen was so pushy and aggressive, I think the movie should have had her at least react to that either as a moment with herself or maybe saying something to her best friend Jen. It wasn't necessarily believable that it took her being kidnapped to finally get something was off with Helen. In some ways, her history made it work and I don't think she was an idiot or anything for believing Helen, but hopefully she'll never be so trusting again. Lifetime has movies where gullible protagonists get people murdered, and Sarah wasn't one of those kinds of protags.
Another movie set in the winter time, and I gotta say, I love it. It adds to the mood and feeling of isolation of the situation as opposed to the sunny, Canadian "LA" backdrops of most of the films.
I recommend at least one watch and judge for yourself.