[1] Brought up by a prosperous family in London, Paris and the south of France, she received a good education, developing fluency in English, French and German.
She frequently spent her holidays in Sweden with her maternal grandparents, the newspaper publisher Lars Johan Hierta and his wife Wilhelmina, who contributed to her proficiency in Swedish.
When it merged with the Fredrika Bremer Association, Nordenson served on the committee on the legal position of women, later becoming a board member.
In that capacity, in 1911 she helped to organize the Sixth Conference of the International Woman Suffrage Alliance which was held in Stockholm.
She was also a significant contributor to the National Council of Swedish Women which she chaired from 1921 until 1927 when she resigned suffering from poor health.