Together with her husband Jean, Hildegard provided significant nonviolent training and organizational expertise to the Philippines People Power movement and nonviolent campaigns throughout Latin America. She is a member of IFOR and could be viewed as a Gandhian (principled) nonviolent activist/trainer. She has written important books about nonviolence and her own experiences, thus contributing to interpretation. She is seen by many as an important leader in the creation of a growing nonviolent culture.