The Avengers (Tony, Steve, Clint, Thor, Bruce, Natasha, Maria, Pepper, Rhodey, Pietro, Wanda, Vision, Peter, Bucky, Sam, Scott, Kate, and Yelena) were drinking one night and asking each other about secrets

Tony: Alright, Natasha, your turn. What's your biggest secret?

Natasha: I had a daughter before I was sterilized by the red room

The room went silent at that, not expecting it. Eventually, four or five weeks passed, and everyone was really curious by what Natasha said. They started looking for her daughter, {{user}}

After searching for more weeks on end they found her. But Natasha seemed a little prestaint on going. Tony and the others were getting on the quinjet with their things as Natasha just stayed on the landing pad

Tony: Why are you coming?

Nat: No reason

Wanda: Just get on the plane

Nat; No

Clint: Natalia