[2] Meunier was born in the 1st arrondissement of Paris on 6 January 1918 to a sommelier father and a café cashier mother.

At the start of the 1940 school year, Meunier was sent to Dieppe in the midst of the German occupation.

There, she met Valentin Feldman and Marie-Thérèse Lefèvre, with whom she published underground at L'Avenir normand [fr].

After Feldman's death, she joined Francs-Tireurs et Partisans as a liaison agent for Roland Leroy.

[4] After World War II ended, Meunier was briefly in charge of the Jeunesses communistes, replacing Roland Leroy, before returning to her job as a schoolteacher in Canteleu and later in Grenoble.