Influenced by the preaching of men like Bourdaloue and Bossuet, the king resolved to abandon his powerful mistress; in 1686 she was finally separated from Louis XIV., but did not leave Versailles until 1691, when, becoming reconciled to her fate, she decided to retire to a convent. Bossuet became her spiritual adviser, and described her habits in the following letter to the king: "I find Mme. de Montespan sufficiently tranquil. She occupies herself greatly in good works. I see her much affected by the verities I propose to her, which are the same I uttered to your majesty. To her--as to you--I have offered the words by which God commands us to yield our whole hearts to him; they have caused her to shed many tears. May God establish these verities in the depths of the hearts of both of you, in order that so many tears, so much suffering, so many efforts as you have made to subdue yourselves, may not be in vain." The king did not wholly abandon his mistress; from a material point of view, she was more powerful than ever, for Louis XIV. gave orders to his minister, Colbert, to do for Mme. de Montespan whatever she wished, and her wishes caused a heavy drain upon the treasury. The king continued to pay court to other favorites, such as the Princesse de Soubèse and Mlle. de Fontanges; the latter was his third mistress, but her career was of short duration, as one of the last acts of Mme. de Montespan was, it is said, the poisoning of Mlle. de Fontanges; this, however, is not generally accepted as true, although the Princesse Palatine wrote the following which throws suspicion upon the former favorite: "Mme. de Montespan was a fiend incarnate, but the Fontanges was good and simple. The latter is dead--because, they say, the former put poison in her milk. I do not know whether or not this is true, but what I do know well is that two of the Fontanges's people died, saying publicly that they had been poisoned." With the increasing influence of Mme. de Maintenon, the king completely forgot his former mistress. Mme. de Montespan was possibly the most arrogant and despotic of all French mistresses and she was, also, the most humiliated. She had inspired no confidence, friendship, love, or respect in Louis XIV., who eventually looked with shame and remorse upon his relations with her. It took her sixteen years to overcome her terrible passion and to give up the court forever. Not until 1691 did she become reconciled to departure from Versailles; thenceforth, penitence conquered immoral desires. M. Saint-Amand says she not only "arrived at remorse, but at macerations, fasts, and haircloths. She limited herself to the coarsest underlinen and wore a belt and garters studded with iron points. She came at last to give all she had to the poor;" she also founded a hospital in which she nursed the sick.