I Left With One Suitcase and Took His Empire Down

After her husband sends her a sum of money and tells her to vanish from his life so he can be with his first love, the heroine leaves their home with nothing more than a single suitcase. She refuses to fade quietly, and instead she begins quietly planning a counterattack against the wealthy family that discarded her. Each step she takes turns the tables on the people who believed she was powerless, and her hidden past becomes the key to her return.