She was born on 29th June 1907, the daughter of Colonel George Stratford Mardall, OBE and Helen Jura Campbell McEwen and was educated at the Michaelis School of Art at the University of Cape Town where she shared the Michaelis Prize in 1928. She studied under the London portrait painter Percival Small and held exhibitions in Cape Town in 1938 and 1963, had a permanent exhibition at the Mount Nelson Hotel and also exhibited in London. She was a figurative portrait painter and flower painter who worked in oils, pastels and watercolours. She served at the Admiralty, Whitehall as a war artist during the Second World War. She married Robert Fitzwilliams on 19th August 1948 in Cape Town and died on 24th September 1965 in Cape Town.