Born in Brisbane, Ebbern and Margaret Smith won the Australian Championships doubles in 1962 and 1963 and the U.S. Championships doubles in 1963. In the same year in the French Championships, they were defeated in the final by Renée Schuurman and Ann Haydon-Jones. In January 1962, she reached the final of the Tasmanian Championships in which she was defeated by Margaret Smith. In July 1963 she won the singles title at the Swiss Championships, played in Gstaad, defeating Lesley Turner in the final in straight sets. In the doubles final, she teamed up with Turner and won against Renée Schuurman and Norma Baylon. In November 1963, she partnered with Smith to win the South Australian doubles title against Turner and Jan Lehane.