Giliane and her husband were drawn to the Paris-based Sacco and Vanzetti group, which developed into the Kronstadt group within the Anarchist Federation. In 1948 this group comprised "approximately twenty militants and sympathisers belonging to the university [of the Sorbonne], in the metallurgy, buildings, medical and hospital departments, focused the books and instruction" including Georg K. Glaser and André Prudhommeaux. Her home in the Latin Quarter of Paris was one of those scheduled for police monitoring.