When the Reverend Mr. Wilson questions Hester to get her to name her child's father, Hester repeatedly refuses. He tells her that revealing this name and her own repentance "'may avail to take the scarlet letter'" from her breast. She replies, "never, [...]. It is too deeply branded. Ye cannot take it off. And would that I might endure his agony as well as mine!" Hester seems to imply that she cannot stop wearing the letter because it isn't just a piece of cloth that she pins to her clothes; it seems somehow more deeply impressed into her very body. She feels that it is "branded," which makes it seem as though it is something she can never, ever remove because it is a part of her now.
In the end, as an old woman, Hester returns to Boston of her own volition and begins to wear the letter once again. "Never afterwards did it quit her bosom." It also seems that Hester has some admirer, a man who sends her letters and gifts that pepper her home. However, she seems to return, and to put the letter back on, because it links her to Dimmesdale, the man she evidently still loves. The letter becomes "something to be sorrowed over, and looked upon with awe, yet with reverence too."