After Dressing up as a Villain: I Survive by Bringing Together the Male and Female Protagonists

A modern social animal accidentally traveled through the book and became a cannon-fodder and vicious female supporting character who could not survive more than three chapters. In order to survive, she had to play the role of the cute legitimate daughter while frantically matching up the male and female protagonists of the original book behind the scenes. In the end, she accidentally turned the most powerful villain in the book - her husband who pretends to be a pig and eats the tiger, into her loyal dog.