Born in Brihuega (Guadalajara), she was already a member of the Juventud Comunista (Communist Youth) and of the Partido Comunista de España (PCE) (Communist Party of Spain) during the Second Republic, before the war broke out. In April 1945 she entered Les Corts.
This was not the first time she had set foot in a Francoist prison: she had been sentenced in 1939 to 30 years, of which she served 6, spent between the prisons of Guadalajara, Amorebieta, Durango, Santander, Ventas and Segovia. She was released in 1944 and deported to Barcelona.