I love all the silly, "you can see the happy ending after the first 3 minutes" Christmas movies. I love them. I watch a ton every year. But this one just doesn't know what it wants to be and fails miserably trying. This movie has at least 4 (maybe 5) typical Christmas movie plots going at once, and doesn't have enough time to develop motivation of characters or resolutions for any them. Even for a Christmas movie people act in extremely contrived ways. You can't figure out why they would do that. And you don't really like them enough to care. Back stories are hinted at but not developed. It seemed the author had no idea how to set up the situation so just randomly got people to move to starting places for the story. Then there is too much plot to resolve, so abracadabra a small event or two suddenly makes everyone make decisions to tie up a happy ending for all the plots elements. Motivations for change are completely inadequate. If they had picked one or two of the several problems in the characters lives and focused on motivations and resolutions for that, it could have been a good movie. But it wasn't.
Review of A Nanny for Christmas
