Since 1987 Anne-Marie has served as a missionary to Hungary and Central and Eastern Europe, first unofficially affiliated with the International Fellowship of Evangelical Students, since 1993 as a missionary of the Reformed Mission League (GZB) in the Protestant Church in the Netherlands. Early April 2016, she was re-commissioned for her work in Central and Eastern Europe by the Reformed Sion Congregation in Houten, the Netherlands, her supporting church since the autumn of 1993, in cooperation with the GZB. In announcing new appointment, the presbytery of her sending church expressed: „We are grateful and pleased to announce that a new opportunity is found for Anne-Marie, where her knowledge, gifts, and experience in the field of missiology, can be fully used for the benefit of Central and Eastern Europe.”