No one knows better than Natalia Romanova that, when you're an assassin, you have a different name for a different personality. Each time you change your name, you don't just change your clothes and your hair, you actually become someone else-to believe anything less is to pull an unconvincing act.
So as she stands in S.H.I.E.L.D.'s headquarters, outside of the control of the Red Room for the first time she can remember, Natalia realizes it's time to leave behind the pain and guilt and memories. It's time to become a new person.
It's time to become Natasha Romanoff.