"There was a program." Natasha pushes through, nervously flexing her fingers in and out of fists. "When I was younger. They adopted little girls who didn't have parents anymore, trained them, used them. They called it the Black Widow program. I was one of the first." She sighs, clearly nervous saying this out loud. She won't be telling him everything, just enough that he knows that she knows this is the right place to look. When she's done being uncomfortable, of course.