After graduating from high school, she continued her studies at the Barcelona Women’s Professional School.
In 1957 Montse sensed that God was calling her to follow the path of sanctification in ordinary life in Opus Dei; so after seeking appropriate counsel, she asked for admission to Opus Dei as a numerary.
In her struggle to reach holiness, Montse always stood out for her love for the Sacred Humanity of Christ, her Eucharistic piety, her devotion to our Lady, her deep humility and her effort to serve others. She found God in the loving fulfillment of her work and study duties, in the small things of each day.
In June 1958, she was diagnosed with bone cancer in her leg. The cancer caused intense pain, which she bore with serenity and heroic fortitude. Throughout her illness, Montse never lost her infectious cheerfulness or capacity for friendship, which sprang from her deep interior life and zeal for souls. As a result, she continued bringing many friends and classmates closer to God during her illness. She died on Holy Thursday, March 26, 1959.
On April 26, 2016, she was declared "Venerable" by Pope Francis.