The shadow / marvel story

Elizabeth Morre has been trained in the red room with her sister (Natasha) since she was 6. Eventually Natasha broke out and left Elizabeth. At the age of 14 she was moved into hydra and begun to work with the Maximoff twins. While they became stronger assassins, their friendship grew stronger too. meanwhile Natasha had found family in the avengers. What happens when the avengers take down the wrong hydra bunker and capture the wrong girl?

* I fell into a kneeling position as one knee rested against the coolness of the floor while the other stayed straight and slanted to the right. While holding my gun I said what I thought would be my last word to him, the glorified killer who wears the colours of a country, week enough to send their enhanced murderers and expect us to fall at there will.
"I'm Elizabeth". 'Thud'. My head hurts. Suddenly a familiar patterned disk came into view from behind. Shit. I thought as darkness overcame me *

TW there will be mature swearing, torture scenes which if you feel uncomfortable with I'm not forcing you to read this book. violence will be included but this is a marvel book so it should be expected

It doesn't follow any real timeline and all timeline stuff is explained in the first chaptery thing called 'timeline and introduction'.