She seemed a good match to Tsar Peter for his son because her elder sister Elizabeth Christine was married to the Holy Roman Emperor Charles VI, and the support of Austria in the upcoming fight with the Turks was appreciated by Russian diplomats.On 25 October 1711 at Torgau, Charlotte Christine married Tsarevich Alexei, eldest son and heir of Peter I of Russia by his first wife, Eudoxia Lopukhina.Charlotte enjoyed the favour of Tsar Peter the Great, but lived an isolated life with her own court, which was composed almost entirely by foreigners and headed by her first cousin, Princess Juliana Luise von Ostfriesland.Later they moved to the island of Bourbon, and when d'Auban died, Charlotte returned to Europe, living in Paris and Brussels, Belgium, with a pension from her niece, Empress Maria Theresa of Austria.In the version of this opera, which takes places in the magnificent palace of the tsarevich in Moscow, Charlotte Christine, who suffers because of her abusive husband, desperately wants to return to Germany.