If you isolate the video from the song, it's good and I applaud her for taking a chance and going out of her comfort zone.
But it just doesn't work for the song. It's too gloomy and sad, plus the song is clearly about a relationship / love affair gone wrong, so the fact that her grandpa was the lead in the video made me feel a little awkward
This is the best she's ever looked though and I prefer this to a generic video, for sure