Her parents were Malte Leopold Roos (1806–1882), a colonel at Svea Artillery Regiment, and Mathilda (Tilda) Beata Meurk (born 1821).

Remaining unmarried, she lived with his sister Anna and sometimes also with Laura Fitinghoff, with whom she built the Furuliden house in Stocksund, which later became, as she had hoped, a rest home for women.

[3][2] Roos' novels usually dealt with women's issues and their unfair treatment in society.

In the novel Hvit ljung (White Heather), she takes up the unclear living conditions of a teacher and rape.

This is considered to have contributed to a government decision that greatly improved teachers' salaries.