Behold, an explicit in-story example of, "The term 'villainess' has lost all meaning", and a reminder that a broken engagement alone isn't enough to qualify. Beyond that, this is the classic Hallmark holiday special plot of, "Person in a relationship that they don't like meets someone that happens to like them." That combines with the twist of, "Someone was reincarnated, but it has zero bearing on the plot." Outside of an amusing character quirk, it doesn't have anything going for it. (The awkward reason for engagement I could take or leave, but it mostly seems to be there for comedic impact, rather than being required for the plot.) It just manages to escape being 'bad' by being a bit too plain.
My ratings on the series, from best to worst (with lines between 'enjoyed', 'neutral', and 'disliked'):
1-2, 7-3, 2-3, 2-4, 6-4, 4-5, 5-2, 6-1, 2-2, 4-1, 5-5, 2-1, 1-4, 7-2, 3-2 | 4-4, 6-6, 7-4, 6-5, 7-1, 4-3, 4-2, 3-1, 6-3, 5-1, 4-6, 2-6, 5-4, 1-5, 3-3, 8-1, 8-2 | 7-5, 3-4, 1-3, 2-5, 3-5, 5-3, 6-2, 1-1