In 1798, Schall was appointed a solo dancer at the Royal Danish Ballet. Initially, she distinguished herself in comedic roles, becoming known as a "
grotesque dancer", within comedy ballet. She eventually grew into more mature roles, such as Hertha in
Lagertha (1811) and Isaura in
Rolf Blaaskæg (1817). The leading role in Galeotti's play
Nina or the Lunatic of Love () was composed by
Claus Schall (her brother-in-law) with her specifically in mind. When the play debuted in 1802 it was the greatest success of her career. The role so closely fit her abilities, that even when she performed it for the final time at the age of 49, critics noted that she was still able to convincingly play 16-year-old Nina. Historian
Erich Christian Werlauff believed that she and Galeotti had a relationship for many years. After his death in 1816, her position as a leading figure in the ballet faded, though she continued to perform. Schall allegedly also had an affair with Prime Minister
Frederik Julius Kaas, who often visited her
dressing room after her performances. It is believed that it was through Kaas' influence that Schall managed to continue performing in the ballet after Galeotti's death—long after other ballerinas of her age had been forced to retire. It was only after Kaas himself died in 1827 that Schall retired. She left the Royal Ballet at the age of 52, having performed there for 40 years. ==Personal life==