At the age of 19 she married Mayer Cahen (1823–1866), a doctor at the Rothschild Hospital, Paris and chief physician of the Chemin de Fer du Nord railway company.
[1] In 1866 she was involved in founding the "Maison Israélite de Refuge pour l'Enfance", an orphanage for Jewish girls at Romainville (relocated in 1883 to Neuilly-sur-Seine).
[3] Léon Gambetta then French Minister of the Interior, subsequently requested her to support the Army of the Loire, she took on the management of the hospital at Vendôme.
In 1872, when the Prussian government was refusing to cooperate on this issue, Cahen discovered in Berlin 59,000 files on the prisoners, and succeeded in getting these transmitted to Paris; this was the first news available in France on many of those who had been captured.
[3] Cahen also became interested in sculpture during the 1870s and created a number of works, including a bust of the French chief rabbi, Zadoc Kahn.