The son of Charles Didelot, the dance master of the King of Sweden, he studied dance with his father, who was an instructor in dance at the Swedish Opera, and debuted as dancer in the theatre of Bollhuset in Stockholm 1786.
The French Theatre performed at the court theatres Drottningholm Palace Theatre and Confidencen at Ulriksdal Palace in the summers, and, from 1783 onwards, for the public at Bollhuset in Stockholm in winters.
When the first national theatre was founded in the old premises at Bollhuset, Stockholm in 1737, where only foreign theatre troupes had previously performed, they were only male actors in the original native troupe, and so the theatre advertised for women to play the female parts before the theatre's formal premiere.
The troupe followed the royal court between the royal palaces and performed on the court- theatres, such as the Drottningholm Theatre and Confidencen, but they also performed for the public in the theatre of Bollhuset in Stockholm during the Winter.
She was appointed premier dancer and was counted as the star of the ballet in the advertisements on the public performances at Bollhuset in Stockholm alongside Louis Gallodier.
Marcadet was born in Sweden as the daughter of two actors of the French Theatre of Bollhuset and at the court theatre at Drottningholm of Queen Louisa Ulrika of Prussia; Jacques Anselme Baptiste and the prima donna Marie Baptiste, and of French descent.