From 2012-2019, she became a founding member of the RfP Network of Women of Faith for Latin America and the Caribbean. Within this period, she was nominated as Coordinator of the Network for the region. In 2001, she became a member of the International Council of Jewish Women (ICJW) and served as Regional President of the ICJW for Latin America from 2006 – 2010.

Dr. Zentner de Falck had always been socially committed and volunteered in various social community projects, such as a Jewish Old Age Home, from 2000-2010.

In the year 2000, she became President of Sociedad Femenina Israelita de Quito (SFI), an institution committed to support Holocaust survivors who had immigrated to Ecuador. She served in this position until 2010 and eventually helped to broaden the outreach of the SFI in support of poor Jewish community members, schools for children living under poor conditions, women who have been raped and abused, old age homes for poor people and young men living with AIDS. From 1990-2000, she sponsored 21 orphan girls as well as a school for poor and violated children, whose parents had criminal backgrounds (1999 – 2008). During the same period, she also worked on a voluntarily basis with children with Down Syndrome.