Born in Slagelse, as a small child she moved to Copenhagen with her parents where her father was employed at the Hotel du Nord.

[2] After a questionable pregnancy, an unsuccessful marriage, periods of illness, and increasing problems with Bournonville and the Royal Theatre, in 1831 she was finally punished with a month's imprisonment in Copenhagen Castle's Blue Tower.

However, after further disputes with the theatre, in 1834 she left to dance in Stockholm, St Petersburg and Moscow, but did not meet with much success.

[1][2] In his Mit Theaterliv, Bournonville praised Krætzmer's graceful style and interesting personality although he was not so happy with her private life.

Johanne Luise Heiberg, who had trained with her at the ballet school, commented that she "performed her role in La Somnambule with grace, innocence and fervor that was quite adorable.