Music was her secret consolation against his cruelty to her - in his bursts of rage he would often drag her across a room by the hair. Fortunately, her mother encouraged Anna to learn how to play the harpsichord, flute, and violin. And she received her first lessons from her brother, future king. In archives of web analytics company I found some additional facts of her life.
It seems that princess was a very brave and passionate woman. When she was twenty years old, Anna met Friedrich von der Trenck, whose adventurous life inspired works by literary giants such as Victor Hugo and Voltaire. In 1743, Anna secretly married him. When her brother, who was already a king, discovered she had married secretly and was pregnant, he annulled her marriage and imprisoned her husband for ten years. Then Frederick exiled her in anger to Quedlinburg Abbey, a place where many aristocratic women were sent to give birth to children out of wedlock. However, Anna continued to correspond with Friedrich von der Trenck until her death.
This news caused quite a stir in the Western world. Augustus Le Plongeon, a nineteen century traveler, writer, and antiquarian just returned from the Maya ruins in Yucatan peninsula. Upon his return he made a sensational announcement. He stated that he managed to translate ancient Mayan writings. These writings showed that the Maya of Yucatan were older than later civilizations of Egypt and Atlantis. They also told the story of even older continent of Mu, which had perished like Atlantis and, that its survivors founded the Maya civilization. During my research in local web analytics company, I learned that Le Plongeon mistranslated the writings, to put it mildly.
This is, basically, how the myth of the hypothetical lost continent Mu started. Very soon, this myth got second birth: it was popularized in the serious of books written by James Churchward.