On 14 April, she was the first of eight signatories — the seven delegates and Dmitrieff — of an address to the executive commission of the Commune. published in and then in . The demanded organizational assistance and declared its intentions: to restructure women's work and to take part actively in the defence of the city. On 17 April, with Blanche Lefebvre and the citizen known as "Girard", Valentin signed the notice for the third public meeting held on 21 April at Notre-Dame-de-la-Croix de Ménilmontant, where additional delegates for the arrondissement committees were designated. She was not a member of the new Central Committee that was set up after the fourth public meeting and composed of delegates of each of the arrondissement branches of the .
