Letizia disapproved of Napoleon's marriage to the widow Joséphine de Beauharnais, on 9 March 1796, on which she was not consulted. When Joseph became ambassador at the court of Rome on 14 May 1796 she accompanied him to Italy. On 1 June 1797, after Napoleon triumphant First Italian Campaign, she visited him in Milan with Caroline and Jerome, she then moved back to Casa Buonaparte in Ajaccio, that had been rebuilt, renovated and redecorated for the occasion. Napoleon allowed his mother and uncle to exercise some supervision over the affairs of Corsica. The prefect of the island received orders not to make any appointment without consulting Letizia or Fesch. On 28 September 1799 Napoleon returning from his successful campaign in Egypt stopped in Ajaccio staying with Letizia until 7 October when he left for Fréjus about to seize power in the bloodless coup d'état of 18 Brumaire the beginning of his rise to power. Letizia moved to Paris. On the evening of 10 November 1799, while she was with her daughters at the Theatre, the play was interrupted and it was announced that an attack against Napoleon had just been foiled. She famously kept her composure and only left at the end of the performance. Even as the mother of the First Consul she was known to live in relative simplicity, receiving a monthly pension of 25,000 francs. When her son Lucien clandestinely married Alexandrine de Bleschamp, known as Madame Jouberthon, against Napoleon's wishes, the brothers fell out. Letizia sided with Lucien and left Paris for Rome, where Pauline already lived as Princess Borghese, and where she stayed with her half brother Cardinal Fesch. Lucien and his family soon followed her.