Don't Be Inlove

There was a Family who believed in forever. They were happy, inlove, close to each other, and contented. But, those moments are almost fading. Because their father loss their company, and had a mistress. The family of his got angry. His wife was so traumatized, because of their company was nonsense anymore. And also her husband has a mistress. The first born of the couple is a high school "graduating" student. She didn't know how to handle the situation , because she will graduate in the next 3 months. And she wants to fix the problem of their family. What solution she will do?