Madame Henriette died at Saint-Cloud in 1670; rumors abounded that she had been poisoned by her husband or his long-term lover, the Chevalier de Lorraine; the two would remain together till the death of the Duke of Orléans in 1701.
In the following year, the Duke of Orléans wed Princess Elizabeth Charlotte of the Palatinate, only daughter of Charles I Louis, Elector Palatine and Landgravine Charlotte of Hesse-Kassel.