I didn't like this drama as the characters never actually develop. The FL is indeed a pushover for the family at the start and her family is terrible. The plot seems promising from the middle where the FL shows signs of development and the family members are kinda towards maturing. Then come the last 2 episodes wheres all the character development that was shown either by the FL or her family members reverts back. I mean what is the point of wasting 20-30 episodes if the characters are still the same as they were in the beginning.
The story has an happy ending but I can't forget about the pushover behavior by FL and asshole mentality shown by her family members in the last 2 episodes which brought down my rating from a solid 8.5-9 to 5

The actors/cast have done a really good job. Especially the ML and FL have made this show very interesting with their acting.