She was married to the affluent merchant Constantin Brun and during the Danish Golden Age of the first half of the 19th century she arranged literary salons at Sophienholm, their summer retreat north of Copenhagen.

She was a bright child and acquired a thorough knowledge of literature and other cultural subjects in the intellectual home although never receiving any formal schooling.

At the time, there was virtually not a man or a woman of any relevance in Denmark, Germany, Switzerland or Italy whom she did not know, with whom she had not had friendly relations, whose character, with imagination and understanding, she was not more or less able to determine and describe in the finest detail.

[3] With Matthisson and with the historian Johannes von Müller, she spent some time in Switzerland in the house of Charles Victor de Bonstetten, who was afterward for several years her guest in Copenhagen.

[3] Her daughter, Ida Brun, who presented mimed "attitudes" inspired by Lady Hamilton, was one of the main attractions at the salons she held in Copenhagen, Geneva and Rome from 1806 to 1816.