Who is Madame de Verquin from The 120 Days of Sodom and Other Writings and what is their importance? 120_Days_of_Sodom English & Literature Madame de Verquin | The 120 Days of Sodom and Other Writings

Madame de Verquin is Saint-Prat's sister. Florville goes to live with her aunt, Madame Verquin, after the death of Saint-Prat's wife. While Florville is living in her home, her aunt encourages her to have an affair with Senneval.