The last time we saw Sharon before The Falcon and the Winter Soldier, she had assisted Steve Rogers in breaking international law to help Bucky.
Directed by Kari Skogland, The Falcon and the Winter Soldier stars Anthony Mackie, Sebastian Stan, Emily VanCamp, Wyatt Russell, Noah Mills, Carl Lumbly, and Daniel Brühl.
When she shows up in The Falcon and the Winter Soldier, Sharon has become noticeably more cynical and bitter and appears to have a more disillusioned view of the world.
The Falcon and the Winter Soldier has shown its main characters go through some pretty major arcs, usually for the better, from Sam Wilson accepting his new role as Captain America, to Bucky Barnes finally moving on from his Winter Soldier persona.