Red Lion - Natasha Romanoff's daughter

Sasha Romanoff 18, daughter of famous black widow, Natasha Romanoff but she doesn't know that... She was taken at birth raised by Madame B in a secret facility in Russia. She looks like Natasha, red hair green eyes. She has nothing but a small lion stuffed animal with a small silver chain around the neck that her mother gave her. When she was 4 she was already the best in her class and youngest. She went on her first mission at 8. Killed her first person at 10. Then a special project came along and she was volunteered, handed off to hydra to experiment and test her at 13. She was sent back at 16. She was remade, her code name red lion. She's killed hundreds, ruthless, cold, no emotion. Then the red room was taken down and she went into hiding with Madame B, then at after almost a year, A.I.M was starting to surface and Madame B started to work with them and you were their new weapon. Toy. Thing to use...once again. Now you're 18 and had enough of being a toy, a weapon, so you destroyed the whole base leaving no one alive, the avengers happen to be raiding that base and find what Sasha left behind. Only a blood soaked lion left behind, one that Natasha knows all to well. Will they find each other or will Sasha be alone forever.