After many years of waiting Marvel Studios' action-packed spy thriller “Black Widow,” is now available in Disney plus starring With Scarlett Johansson, Florence Pugh, Rachel Weisz, David Harbour
Here is the reason I think about this:
In Endgame, during the 5-year snap, we perceived how Natasha played the job of the pioneer.
In one of the Endgame scenes, Natasha says "This channel is consistently dynamic, so if anything goes sideways, anybody's raising hell where they shouldn't, it comes through me" (to Nebula, Okoye, Carol, and Rocket) Also, when they visited Thanos, she quickly asked, "where are the stones" and you can see the frightened look all over when Thanos disclosed to them that he annihilated them.
Furthermore, in the Endgame scenes where Natasha was in the Compound, she was consistently tragic and crying. I for one feel like after every one of the misfortunes and stress the Avengers looked in those 5 years, Natasha must've been thinking about whether or not Yelena was also snapped. She was probably terrified because she had JUST gotten her sister back, but now, there is a chance that she lost her again due to the snap and that lone thing that kept Natasha going was attempting to get Yelena back.
What's more, that is the reason she took on that position of authority and was generally so anxious to do in a real sense anything it took to discover an answer to get Yelena back.
In any case, The post-credit demonstrates that Yelena and Val knew one another for a long time, as Yelena appears to be truly burnt out on Val ("You should not trouble me on my get-away, Valentinaaaaa"), which implies she knows val for quite a while.