In Denmark, she received ballet training from Emilie Walborn and Jenny Møller. She continued her studies in Paris with Olga Preobrajenska, Léo Staats, and Lubov Egorova. She toured with various companies in the 1920s and "30s.
Kirsova toured to Australia as a principal artist in the Ballet Russe de Monte Carlo in 1936.
She returned in 1938 to wed the Danish vice-consul Doctor Erik Fisher, who was living in Sydney. Her company, the Kirsova Ballet, was based in Sydney and presented its first show in 1941.
The Kirsova Ballet continued to present works on and off until 1944, when it folded due to war-time financial constraints and difficulty receiving backing from J. C. Williamson Theatres, which largely controlled Australian theatrical productions at the time. Kirsova"s school and company played an important role in exposing Australians to ballet.
The set designer Loudon Sainthill worked with Kirsova in the early part of his career.
She died in London in 1962, aged only 51.
Most notably, she was a founding member of the Ballet Russe de Monte Carlo.