The red room princess

Natalie Romanoff is a russian assasian just like her mother Natasha Romanff. When Natasha was young and hadn't gotten thru the graduation ceremony, she got pregnant from a guy who worked at the red room. Natasha was able to hide her pregnancy really well and she gave birth with no one notecing. After Madame B found out about her best students child, she decided it would be the best to kill the baby, but Natasha made a deal with her: let the kid be alive, but she would be raised in the red room, just like Natasha was. Natalie turned out to be just as good of an assasian as her mother who she didn't really know, since Madame B didn't let to see her. When Natalie was nine, Natasha was able to get her daughter and escape the red room. Now Natasha is an avenger and Natalie is the most kept secret.