Oh Nice! I Married the Mad Devil!

Nina Reed's father and stepmother set the fire that killed her mother, and she was in the house to see it. Years later her stepsister Ethan Tate is head of the Tate family, and he has a reputation for cruelty that scares off the girl he is promised. Nina's stepsister, afraid of that marriage, arranges for Nina to be put into the wrong wedding car and takes Ethan's nephew for herself instead. Nina works out what has been done to her and goes through with it anyway. Marrying into the Tate family gives her a position her own family cannot reach, and she means to use it. She and Ethan settle into an arrangement of their own, with the perfume business, the inheritance, and her stepfamily's exposure all worked through from inside the house she married into.