Frightened by something in her own nature

She looked around with a haunted look, then sank down on her knees and prayed a long time. She repented and confessed, wildly and unrestrainedly, in growing passion, with the same fanatic self-loathing that drives the nun to scourge her naked body. She sought fervently after the most groveling expressions, intoxicating herself with self-abasement and with a humility that thirsted for degradation.
At last she rose. Her bosom heaved violently, and there was a faint light in the pale cheeks, which seemed to have grown fuller during her prayer.

O what will she do, a soul bitten into with wrong?

She had a strong, if erroneous, conviction of her own futility, and wished she had never come out of her backwater, where nothing happened except art and literature, and where no one ever got married or succeeded in remaining engaged.

She felt the abyss of disenchantment.

...misery had her dwelling in my heart...

Here, there was the taint of deepest sin in the most sacred quality of human life, working such effect, that the world was only the darker for this woman's beauty, and the more lost for the infant that she had borne.

Woman was God’s second mistake.

Her future, she thought, was likely to be worse than her past, for after her years of contented renunciation, she had slipped back into desire and longing; she found joyless days of distasteful occupation harder and harder; she found the image of the intense and varied life she yearned for, and despaired of, becoming more and more importunate.

It exasperated her to think that the dungeon in which she had languished for so many unhappy years had been unlocked all the time, and that the impulses she had so carefully struggled with and stifled for the sake of keeping well with society, were precisely those by which alone she could have come into any sort of sincere human contact.

She was no longer that happy creature who in earlier youth wandered with me on the banks of the lake and talked with ecstasy of our future prospects. The first of those sorrows which are sent to wean us from the earth had visited her, and its dimming influence quenched her dearest smiles.

Sarah felt that any world that needed this many lessons must have something deeply wrong with it.

Have you ever felt in your inmost being, the conscience of others?' again she was trembling, the words were not releasing her. 'It's intolerable you know

She was a creature of the woods and hills, of springtime flower and autumn flight of birds. She knew these things and lived with them and was, in some strange way, a specific part of them. She was one who dwelt apart in an old and lost apartment of the natural world. She occupied a place that Man long since had abandoned, if, in fact, he’d ever held it.