[4] She served as Malaysia's Ambassador to the United Nations, Yugoslavia, Austria, and the European Economic Community during her diplomatic career.
[3] In 1948, she acted as the defence attorney for Lee Meng, a Communist guerrilla leader arrested in Perak, Malayan Union.
[3] In 1968, she defended eleven young people who had been sentenced to death for collaborating with Indonesian forces during the Indonesia–Malaysia confrontation.
[3] In 1971, Malaysian Prime Minister Abdul Razak Hussein named Lim deputy permanent representative to the United Nations, a position which held the rank of Ambassador to the UN.
[3] Lim later continued her diplomatic career as the Malaysian Ambassador to Yugoslavia, Austria, and the European Economic Community.