Mathilde and her husband always supported each other, and Mathilde Bajer was active in the Danish Peace Society (Dansk Fredsforening) to which Fredrik Bajer was dedicated. The English Quaker and pacifist Priscilla Hannah Peckover met Fredrik and Matilde Bajer at a Nordic Women's meeting in 1888. Peckover paid Matilde Bajer's expenses so that she could participate in international peace meetings.
Peckover
Matilde Bajer