Her weekly (French) letters to her daughter, the Duchess of Lorraine were destroyed in a fire on 4 January 1719 at the Château de Lunéville, the country residence of the Dukes of Lorraine. In the late period, the wife of the British heir to the throne and later King George II, Caroline of Ansbach, also became an important correspondent, although they never met; she was an orphan who became a ward of Electress Sophia's daughter Sophia Charlotte of Hanover and was married by Sophia to her grandson George in 1705. From her Liselotte learned all the details about the family quarrel at the English court. She also wrote regularly with the sister of George II and granddaughter of the Electress Sophia, the Prussian Queen Sophia Dorothea of Hanover. Numerous letters to other relatives and acquaintances have also been received, including to Anthony Ulrich, Duke of Brunswick-Wolfenbüttel and his librarian Gottfried Wilhelm Leibniz, who had previously been in the service of Sophia and her husband for a long time.