Geneviève d'Ossun Antoinette had been sentenced guilty, and neglect to report them. She was called before the court on 25 July and judged guilty as charged and sentenced to execution by guillotine the following day in accordance with the Law of 22 Prairial. According to a co-prisoner who was not sentenced to death, she behaved with courage during her trial. The protocol stated: "Age 44, born and resident of Paris, the widow d'Osson, a former noblewoman and Marechale, previously the lady-in-waiting of the widow Capet, was sentenced to death on the 8 Thermidor the Year II in Paris by the Revolutionary Court
Louise Marie Adélaïde de Bourbon, Duchess of Orléans de Chartres accompanied them to safety in Switzerland. In the meantime, due to her poor health, Marie-Adélaïde was allowed to stay in France, under guard, at the château de Bizy, where her father had died a month earlier. Her inheritance, however, was confiscated by the revolutionary government. Despite having voted for the death of his cousin Louis XVI of France, and having denounced his son's defection, Philippe Égalité was guillotined on 6 November 1793. Upon the execution of her husband, Marie-Adélaïde, now known as the "Veuve Égalité" ("Widow Égalité"), was incarcerated at the Luxembourg Palace, which had been transformed into