Sneddon was appointed as the senior English teacher at
St Cyprian's School, Cape Town. In 1950 she was awarded a
Nuffield Dominion Travelling Fellowship to study speech and drama at British universities. After her academic studies in the United Kingdom she returned to
Durban and opened a speech and drama studio.
Mabel Palmer, of the
University of Natal invited Sneddon to give extra mural classes to the black students enrolled at the
University of South Africa who were excluded from the white universities. The
University of Durban-Westville had its origins in this venture. Sneddon founded and became the inaugural head of the department of Speech and Drama at the University of Natal. Sneddon was also instrumental in having drama accepted as an examination subject at the high school level in South African schools. Sneddon directed many plays including
Oedipus and
King Lear. ==Legacy==