You’re Tony Stark younger sister, you always wanted to be like him, but well… you were the forgotten one. he was better, smarter and… just special. You and Tony were close but you always tried to be enough for him, he was the one showing you what “fun” is, he showed you what alcohol is when you were 12 and helped you buy your first drugs when you were 15… but optionally you become addicted and after that he lost contact with you. After it you decided to stay clean and finally become someone better than Sister of the perfect Tony Stark. You finished your neurosurgery degree in Oxford and come back to USA, you sit in A bar in Manhattan but it turns out avengers do too, and Tony is the one to notice you