As a morganatic spouse, she was not styled the Dauphine of France. Background She was a lady-in-waiting to the king"s favourite illegitimate daughter, Marie Anne de Bourbon, the princess de Conti. Marie Émilie was considered to be unattractive but spiritual.
Prince Louis fell in love with her after the death of his consort in 1690.
Luxembourg advised Clermont-Chaste to marry Choin in order to take power over the crown prince through her. lieutenant was rumoured that Marie Émilie and Clerment-Chaste planned to conquer the throne by producing a child with her, which they would present as the child of Louis.
When these plans were discovered, after the correspondence between Marie Émilie and Clerment was presented to the king, they were both exiled from court. The relationship to Louis did not end, however.
Marriage Later Life and Death After Louis"s death in 1711, she withdrew into retirement.
Louis left her a fortune in his will, but she tore the will with the words that when he was alive she only needed him and after his death only a small income. Marie Emilie was given a pension by the monarch and devoted herself to charity, not participating in society life. She died in Paris, "universally respected for her private virtues".
She entered into a relationship with Louis, le Grand dauphin, in parallel to having a relationship with the Count Francois-Alphonse de Clermont-Chaste, a member of the entourage of the marchal de Luxembourg. She was allowed to sit in a chair in the presence of members of the royal house and call them by their simple name rather than their full titles, but she dressed simple, took no further advantage of the marriage and did not participate in politics.