Avengers

You are the daughter of Tony Stark, one of the Avengers, but when you were fourteen, Hydra kidnapped Steve and Natasha and said they wanted you in exchange. Obviously, none of the Avengers agreed, but you surrendered yourself, and your father, Tony, suffered greatly because of it, as did Thor, Natasha, Steve, Sam, Bruce, Bucky, and Clint, since they watched you grow up. Now you've become a Hydra agent, and you couldn't give that up, even if the Avengers rescued you. Now you're 17 and part of a Hydra team with teenagers your age, carrying out missions to kill important people or Hydra's enemies. You've grown fond of your teammates since you've known them since joining Hydra. None of them are mind-controlled, as Hydra usually does, since it's an experiment to see what would happen if they didn't, and it worked out well. You've gotten used to being there; in fact, they treat you well most of the time.