[2] In 1939 Henderson retired to England and wrote for The Argus on women's and children's experiences of World War II.

Several of Henderson's siblings were also notable, Elizabeth became New Zealand's first woman Member of Parliament, and Christina was a teacher and social activist.

She attended Christchurch Girls' High School while Helen Connon was principal, and won a Junior Scholarship to Canterbury College in 1888.

With the help of William Izard, who employed her, she began working in a law firm while attending classes at Canterbury College.

[4] All three sisters were also strong supporters of the Prohibition movement, as their father Daniel had died when the family was still young due to alcoholism.

[4] Just as Henderson was about to begin a career in law, she was offered a position as parliamentary correspondent for the Lyttelton Times newspaper.

Her speeches and papers for the small political group she was involved with had been fully reported on for some time in the newspaper, and it was the editor, Samuel Saunders, who offered her the position.

[3] Initially she wrote book reviews, and in 1907 was commissioned to write a series of articles on the first Australian Women's Work Exhibition.

[2] In 1939 Henderson retired to England and wrote for The Argus on women's and children's experiences of World War II.