[1][2] She contributed to feminist journals such as La Fronde,[3] founded by Marguerite Durand.

Wife of the feminist writer Léopold Lacour,[4] she shared his passion for mixed-gender education.

She spoke at the International Congress of Women of 1896, in Paris, chaired by Marie Bonnevial, describing the state of mixed-gender schools in Europe,[5] and responding to the arguments of their opponents.

[2] In Literature (Harper and Brothers, 1898), Léopold-Lacour's name was included on a list of potential members if an Academy of Ladies was formed in Paris, several meetings already having been held to deliberate on the scheme.

[6] She participated in the planning committee of the "Condition et Droits" Congress, September 1900.