She went on to be cast in several of Rautenbach's films, including Janie Totsiens (1970), Pappa Lap (1971), and Eendag op 'n Reendag (1975).
Due to the apartheid policy in South Africa at the time, there were severe censorship laws in place, however Heyns was still able to make documentaries about various literary individuals.
[3] Keyan G. Tomaselli, a professor at the University of KwaZulu-Natal notes how Heyns' films are able to comment on the political climate in South Africa, by applying a feminist lens.
[1] All of Heyns' pieces evoke themes of relationships, love, and struggle, while simultaneously questioning gender representations in South African culture.
[2] Through her films, Heyns tries to bring lesser known issues and ideas into the global conversation, such as mental illness and female empowerment, while consistently doing so in the context of South African culture.