Another brilliant success awaited her in the part of Monime, in Racine's _Mithridate_, produced on January 13, 1673, the day after its author's reception at the Academy. The play was received with enthusiasm; and Madame de Coulanges wrote to Madame de Sévigné, then on a visit to her daughter, in Provence: "_Mithridate_ is charming; you see it thirty times, and the thirtieth it seems finer than the first."[49] On March 4, it was played at Saint-Cloud, before _Monsieur_ (the Duc d'Orléans), the Duke of Monmouth, Madame de Guise, the Princesse de Monaco, and other distinguished persons; and, in the following August, at Saint-Ouen, where Boisfranc, _Surintendant des Finances_ to _Monsieur_, was entertaining a party from the Court. For her rôle, which was a most exacting one--Mlle. Clairon confesses in her _Mémoires_, that she had never succeeded in playing it entirely to her satisfaction--Mlle. de Champmeslé appears to have received very careful instruction from Racine; and the critics were agreed that seldom had anything more expressive and charming than her acting been seen. She was particularly admirable in the scene in the third act, where Monime inadvertently confesses to the jealous Mithridate her love for his son Xiphanès. "Her cry of anguish when she sees that she has betrayed the secret of her heart, sent a shudder through every vein of the spectators and transported them with emotion." Brossette tells us that one day, when dining with Boileau, the conversation turned on the subject of declamation, whereupon the poet repeated this passage in the tone of Mlle. de Champmeslé, as a perfect example of the art.