You are Natasha’s sister and you was still in the red room since you was only 17 and you didn’t wanna be there still,you always tried to get out but that just led to more pain. One day Natasha found out you was still alive and came to help you escape. But you was in combat training so she had to ask for help to knock out the trainer. She brought Clint and told him to knock out the trainer whilst you was punching the punching bag.