Following World War II, Zigahl was a member of the Sonne Commission, an American-led body which sought to resolve the post-war refugee crisis in West Germany.
[4] In 1926, she spoke in support of a bill proposed by the state government which would limit the ability of married female civil servants to continue working in their positions, arguing that the majority of women voluntarily retired upon marriage.
[10] A Gestapo dossier on Zigahl states that she retired after leaving office, was not politically active during the Nazi era, and moved to the Charlottenburg neighborhood of Berlin.
[11] After World War II, Zigahl was appointed to the Sonne Commission, a 14-member body consisting of nine Americans and five Germans which was part of the Economic Cooperation Administration.
[12][13][14] Zigahl was placed in charge of social welfare issues, and led efforts to create jobs for refugee women, particularly mothers, as "an economic stopgap".