château de Meudon. His death in 1711 left her quite distressed. It was at Meudon that Marie Anne met and fell in love with the young but very poor Count of Clermont-Chaste. He joined the court and benefited from his intimacy with Marie Anne. The couple exchanged love letters, but a swift exile was ordered for Clermont-Chaste when Louis XIV discovered the liaison (possibly from his daughter-in-law, Émilie de Choin).

Upon the death of Louis XIV on 1 September 1715, a regency was established and her brother-in-law, the Duke of Orléans was named as regent (1715–1723). In 1721, Marie Anne was made responsible for the education of Louis XV's future bride, the InfantaMariana Victoria of Spain, who arrived in France at the age of three. The young Infanta wasnicknamed l'Infante-reine ('the Queen-Infanta'). However, because of the infanta's age, the marriage did not take place and the little girl was sent back to Spain four years later, in 1725, an event which caused friction between her father King Philip V of Spain and the youthful Louis XV.[citation needed] After the departure of the seven-year-old Infante-reine, Marie Anne then retired from court and spent her remaining years residing on her various estates.