The Husband Switcheroo novel

The wealthy Hanson family makes it clear that whichever sister gives birth to the family’s first grandson will inherit the billion-dollar fortune. In my previous life, my sister, under our parents’ arrangement, married the strong and healthy third son, Jerome Hanson. I, on the other hand, was given to the gloomy eldest son, Lester Hanson, whose legs were paralyzed. Under my treatment, Lester regained full use of his legs. I became pregnant with the Hanson family’s first grandson. Meanwhile, my sister was driven to madness by Jerome’s abuse, becoming the laughingstock of every wealthy woman’s dinner gossip. On the day I went into labor, my sister stabbed my belly with a knife. Then, she pulled me off a rooftop with her. Now, in this life, we start over. The moment Lester sends over a golden bridal bouquet, my sister snatches it without hesitation. "I want to marry Lester!" she declares.