The Reckoning (Steve Rogers/OC) - Dark AU Fic

In a world where Crime Bosses and corrupt Politicians rule, the Stark and Rogers families had once been allies in the business of organized crime until Howard Stark decided to screw Joseph Rogers over in a deal that cost the head of the Rogers family his life. Their sons had a short lived truce to try to end the feud, but it would end quickly when Tony Stark steals away a woman Steve Rogers once believed he loved deeply. Between that and watching the grief from the loss of his father destroy his mother, Steve vows revenge in such a way that it will be a reckoning against Tony like no other, the most unexpected takedown he could never see coming. The key to Steve's revenge is Tony's only child and heir, his beautiful 18 year old daughter. Alexandra Stark was born into a world her father tried to keep her out of as much as possible, though she would one day be running his empire as the famed bachelor's only child. Her late mother had signed away her rights at birth per Tony's request so he could keep her mother's family away, a very rich and politically well positioned family that will become an unexpected ally for Steve in the war against Tony. They're a family with their own motives to see Tony get his comeuppance, as they blame him for the death of Alexandra's mother after Tony wouldn't allow her to change her mind about giving up her daughter and fell into a path that lead to her death before her baby turned one. The head of the family ensures once Alexandra is of age to find a way to get to know her by offering her a job as one of his interns, which puts Alexandra right in Steve's path and she's easily charmed by him. What is to become of her now? Can Steve Rogers succeed in his plan to not only take Tony down but also take his daughter from him? Where does she stand in this? Will Alexandra learn the truth of her mother and from who? What path will she choose when it comes to Steve and her new found family? Will Tony Stark see his day of reckoning for his sins?