A leading figure in the Red Stocking Movement, she organized and participated in meetings and seminars which formed the basis of gender studies in Denmark.
[1] Raised in closely-knit family, Arnfred completed her high school education at Copenhagen's Akademisk Studenterkursus in 1962.
[1] Back in Denmark, in 1971 she became a member of the feminist organization Kvindebevægelsen and helped to arrange the key weekend gathering in Tåstrup in January 1972 which brought together some 250 women from Copenhagen and the Danish provinces.
[4] Her resulting contacts with the Red Stocking Movement led to her adopting a Marxist-feminist approach to sociology.
Arnfeld has maintained a continued interest in Africa, revisiting Mozambique and working as a consultant in Harare, Zimbabwe.