Trân-Thi-Kim-Diêu joined the TS in 1972. She is a post-graduate in Pharmaceutical Technology. Kim-Diêu is Chairperson of the European Federation of the TS and Vice General Secretary of the TS France.
She has been giving monthly courses at Paris Headquarters since 1987. She has been involved in the work of the European Federation since 1989; she helped to publish several basic theosophical titles in various local languages. She re-started the TS activities in Eastern Europe, particularly in Russia and Ukraine.
She is former Chairperson of the Naarden International Theosophical Centre and former General Secretary of the French Section. She has been a speaker at many summer schools, seminars, and congresses, European School of Theosophy and Krotona Institute. She has conducted several sessions of the School of the Wisdom in Adyar, India. She worked at Adyar international HQ for half a year. She has toured lecturing in New Zealand, Singapore, the Philippines, Australia, and Canada.
Kim-Diêu travels widely in Europe to encourage cooperation and promulgate the teachings. Her main concern is to promote a new way of living where human beings can be guided by universal ethics and the mystic dimension of consciousness.