Perfectly depicted mental health issue: take away the FLs martyr victim status and she is angry. Every single person, that tried to help her gave up in the end. Yes, she wanted to go on being the victim and suffering till the end. They killed her baby, they injured her mother severely....but the FL was blossoming in all that suffering and enjoyed her victim role.....this drama should be a must watch for first year psychology students.....
Actually it made absolute sense, that she stayed with the ML in the end. Only he can make her suffer more and more.
If you want to watch for the romance - do not waste your time, there is none. Only suffering, humiliation, degrading and abuse right up until the very last episode.