Born in New Zealand, O’Connor moved to Western Australia with her family in 1891 when her father, C.Y. O’Connor was appointed Engineer-in Chief to the Government of Western Australia. Her early art studies were with James W.R. Linton at Perth Technical School before moving to Europe where she studied and worked in Paris. Returning periodically to Australia, she exhibited and contributed articles to publications such as the West Australian, settling permanently in Perth in 1955. By then she had become thoroughly French in her attitude, habits, language and painting style. Her paintings of still life, portraits and genre reflect the softness and charm of the intimist paintings of Vuillard and Bonnard. She continued as a practising artist and exhibited widely in Australia until her death.