FL lived a miserable life. She got cancer, her husband is a freeloader and is cheating with her so-called bestfriend. When she died, she suddenly went back to her past and is determined to get revenged on the people that wronged her.
This is quite dramatic but her revenge plot would want you to keep on reading with the story and would keep you wondering whether she'll finally change her fate or not. There might be some questionable relationship that hasn't been shown in the end but it's really not that relevant to the story. Overall, it's a good read.
Marry My Husband