Carmen was born in Ólvega (Soria) on 24th November 1930 and spent her childhood in Tudela (Navarra). She felt the call to be missionary from an early age, influenced by the spirit of Saint Francis Xavier. She graduated in chemistry from the University of Madrid. For some years she was a member of the Instituto Misioneras de Cristo Jesús and studied theology in Valencia. In 1964 she joined Kiko Argüello in the shanty town of Palomeras Altas in Madrid. While announcing the Gospel to the poor among whom they lived, the Lord led them to a theological-catechetical synthesis based founded on the Word of God, the Liturgy and the Community. This become the basis of the Neocatechumenal Way, whose Statute was approved by the Holy See in 2008. The Archbishop of Madrid at the time, His Grace Casimiro Morcillo, encouraged them to introduce this itinerary of Christian initiation in the parishes. For more than 50 years, toguether with Kiko Argüello, Carmen gave her life announcing the Gospel throughout the world. She had an immense love for Jesus Christ, the Church, the Virgin Mary, the Pope, the Liturgy, Sacred Scripture and the Jewish roots of Christianity. She died in Madrid on 19th July 2016.