 She taught painting at the University of the Witwatersrand, the University of Pretoria, the Michaelis School of Fine Art in Cape Town, Scuola Lorenzo de' Medici in Florence, Italy from 1989 to 1991 and acted as external examiner for under-graduate and post-graduate degrees at Pretoria, Potchefstroom, Natal, Stellenbosch and Cape Town Universities.Several of Mason's works deal with the atrocities uncovered by the Truth and Reconciliation Commission.Mason died in White River 28 December 2016.