Hawthorne explores the reasons why Hester remains at the margins of the Puritan settlement, when she is free to leave if she wishes.

It may seem marvellous, that, with the world before her,--kept by no restrictive clause of her condemnation within the limits of the Puritan settlement, so remote and so obscure,--free to return to her birthplace, or to any other European land, and there hide her character and identity under a new exterior, as completely as if emerging into another state of being,--and having also the passes of the dark, inscrutable forest open to her, where the wildness of her nature might assimilate itself with a people whose customs and life were alien from the law that had condemned her,--it may seem marvellous, that this woman should still call that place her home, where, and where only, she must needs be the type of shame. But there is a fatality, a feeling so irresistible and inevitable that it has the force of doom, which almost invariably compels human beings to linger around and haunt, ghost-like, the spot where some great and marked event has given the color to their lifetime; and still the more irresistibly, the darker the tinge that saddens it. Her sin, her ignominy, were the roots which she had struck into the soil. It was as if a new birth, with stronger assimilations than the first, had converted the forest-land, still so uncongenial to every other pilgrim and wanderer, into Hester Prynne's wild and dreary, but life-long home. All other scenes of earth--even that village of rural England, where happy infancy and stainless maidenhood seemed yet to be in her mother's keeping, like garments put off long ago--were foreign to her, in comparison. The chain that bound her here was of iron links, and galling to her inmost soul, but never could be broken.

It might be, too,--doubtless it was so, although she hid the secret from herself, and grew pale whenever it struggled out of her heart, like a serpent from its hole,--it might be that another feeling kept her within the scene and pathway that had been so fatal. There dwelt, there trode the feet of one with whom she deemed herself connected in a union, that, unrecognized on earth, would bring them together before the bar of final judgment, and make that their marriage-altar, for a joint futurity of endless retribution. Over and over again, the tempter of souls had thrust this idea upon Hester's contemplation, and laughed at the passionate and desperate joy with which she seized, and then strove to cast it from her. She barely looked the idea in the face, and hastened to bar it in its dungeon. What she compelled herself to believe,--what, finally, she reasoned upon, as her motive for continuing a resident of New England,--was half a truth, and half a self-delusion. Here, she said to herself, had been the scene of her guilt, and here should be the scene of her earthly punishment; and so, perchance, the torture of her daily shame would at length purge her soul, and work out another purity than that which she had lost; more saint-like, because the result of martyrdom.