She began her teaching career, first at City Mission School in Maitland, then at Bridgetown East Primary School in Athlone in 1956, and in 1957 became a member of the newly established Cape Peninsula Students' Union (CPSU), affiliate of the Unity Movement of South Africa, which aimed at overcoming racial divisions and forging solidarity among students of different cultural backgrounds.

She went on to be a member of the militant study group Yu Chi Chan Club, which was disbanded at the end of 1962, to be replaced by the National Liberation Front (NLF) in January 1963.

[citation needed] In 1973, as her banning order drew to a close, September applied for a permanent departure permit, having secured a position at Madeley College of Education in Staffordshire.

In London, she joined the activities of the Anti-Apartheid Movement and was in the frontline of numerous political rallies and demonstrations at South Africa House in Trafalgar Square.

The song was performed at his Destination Docklands concert at London's Royal Victoria Dock in October 1988, and features on the album recording of this, Jarre Live (1989).

Her short story "A Split Society – Fast Sounds on the Horizon" was included in the 1992 anthology Daughters of Africa, edited by Margaret Busby.

A book about her murder, Dulcie: Een Vrouw Die Haar Mond Moest Houden by Evelyn Groenink, was published in the Netherlands in 2001.

Other buildings and streets in the neighbourhood have also been named after prominent historic South Africans, including Steve Bikoplein, Nelson Mandela School and Retiefstraat.