For many years she led the French branch of the International Abolitionist Federation , which sought to abolish state regulation of prostitution and fought trafficking in women.
She advised the French government and the League of Nations on women's issues. She spoke several languages and traveled widely. As a young woman she seems to have spent much time in central Europe. Her portrait by Teodor Axentowicz was exhibited in the Salon in , and published in La jeune Dame.
She was mentioned in society newspapers. The Gentlewoman reports her presence at a matinee dance given the Baroness de Montebello, apparently her aunt. In the mids she published a series of children's stories set in Eastern Europe. She signed the stories and her first newspaper articles "Savioz".
In the s she began to participate in the Conference of Versailles, an annual meeting of Protestant women's charities. It was through this that she became involved in the abolitionist campaign to end government-regulated prostitution. She published a remarkable article in this paper on the conditions in the prison of Saint-Lazare, where prostitutes were held. The marriage did nothing to reduce her activism. No doubt it was due to her husband that she was able to hold several feminist meetings in the Civil Engineers premises at 19 rue Blanche.
Between and she was a member of a government commission to investigate the activities of the vice squad. From to Sainte-Croix was a member of the independent Coulon-Chavagnes commission that studied the marital laws in France, under which women were disadvantaged, with a view to overhauling the civil code.
