During the story Hester comes back to wear the Scarlet Letter because she didn't get forgiven. In the text, it says “But her hesitation was only for an instant,though long enough to display a scarlet letter on her breast.” With hesitation, shows she didn't get forgiven. Also in the text it says “And Hester Prynne had returned,and taken up her long forsaken shame!” Hester felt alone without Dimmesdale so they still weren't forgiven.
According to the end of the Scarlet Letter Hester dies in the town, separated