As a small child, María de Lourdes lived for five years in Zetal, Veracruz where her father was posted.

María de Lourdes was asked to contribute to Mexico's international goodwill-campaign and Miguel Alemán Valdés, at the time chairman of the National Tourism Board, named her Ambassador of the Mexican Song.

In 1963, upon an invitation of President Sukarno, María de Lourdes performed at the Games of the New Emerging Forces in Jakarta.

She continued to receive invitations to perform for high-level visitors, such as the visit of German President Walter Scheel to Mexico in 1977.

María de Lourdes was invited by Queen Beatrix in 1991 to sing Las Mañanitas at the 80th birthday of her father, Prince Bernhard.

When her remains arrived in Mexico-City, thousands of followers filled Garibaldi-square, bode a last farewell and sang Cruz de Olvido.