She began her BA at Bedford College, London, before coming to Cambridge University in 1921 where she took Part II Moral Sciences in 1923 and obtained a first class degree.
She married psychologist Rex Knight on 30 January 1926 (they divorced in 1936), and then appears to have taken a break from academic philosophy until 1932 when she returned to Newnham as Sarah Smithson Research Fellow.
During the war she was Principal at the Board of Trade, a position that had been temporarily filled by fellow philosopher Margaret MacDonald.
She also taught English at an independent girls boarding school, North Foreland Lodge in Kent from 1942 to 1949.
[5] In 1949 Knight emigrated to Australia, where she became a tutor in English literature at Janet Clarke Hall, University of Melbourne until the 1960s.