The innocent Marchioness, meanwhile, observed, with extreme grief, the alteration in her husband's manners. He became reserved and thoughtful in her presence; his conduct was austere, and sometimes even rude; and he left her, for many hours together, to weep for his unkindness, and to form plans for the recovery of his affection. His conduct afflicted her the more, because, in obedience to the command of her father, she had accepted his hand, though her affections were engaged to another, whose amiable disposition, she had reason to believe, would have ensured her happiness. This circumstance Laurentini had discovered, soon after her arrival in France, and had made ample use of it in assisting her designs upon the Marquis, to whom she adduced such seeming proof of his wife's infidelity, that, in the frantic rage of wounded honour, he consented to destroy his wife. A slow poison was administered, and she fell a victim to the jealousy and subtlety of Laurentini and to the guilty weakness of her husband.

But the moment of Laurentini's triumph, the moment, to which she had looked forward for the completion of all her wishes, proved only the commencement of a suffering, that never left her to her dying hour.

The passion of revenge, which had in part stimulated her to the commission of this atrocious deed, died, even at the moment when it was gratified, and left her to the horrors of unavailing pity and remorse, which would probably have empoisoned all the years she had promised herself with the Marquis de Villeroi, had her expectations of an alliance with him been realized. But he, too, had found the moment of his revenge to be that of remorse, as to himself, and detestation, as to the partner of his crime; the feeling, which he had mistaken for conviction, was no more; and he stood astonished, and aghast, that no proof remained of his wife's infidelity, now that she had suffered the punishment of guilt. Even when he was informed, that she was dying, he had felt suddenly and unaccountably reassured of her innocence, nor was the solemn assurance she made him in her last hour, capable of affording him a stronger conviction of her blameless conduct.

In the first horrors of remorse and despair, he felt inclined to deliver up himself and the woman, who had plunged him into this abyss of guilt, into the hands of justice; but, when the paroxysm of his suffering was over, his intention changed. Laurentini, however, he saw only once afterwards, and that was, to curse her as the instigator of his crime, and to say, that he spared her life only on condition, that she passed the rest of her days in prayer and penance. Overwhelmed with disappointment, on receiving contempt and abhorrence from the man, for whose sake she had not scrupled to stain her conscience with human blood, and, touched with horror of the unavailing crime she had committed, she renounced the world, and retired to the monastery of St. Claire, a dreadful victim to unresisted passion.