Trapped in My Enemy's Embrace

Mu Qiqi's younger sister can put on a performance for their parents, and the parents believe it every time. Mu Qiqi cannot do it. Whatever goes wrong in the house gets put on her, and she has worn the blame for so many things that the word people use for her is scapegoat. She wants out of the family. The way out she picks is marrying the man her parents treat as their enemy, and she gets it. She finds she likes being the enemy's wife a good deal more than she ever liked being a daughter. He backs her when she goes after the people who set her up, and after that things run well for her.