On the evening of 29 November 1932, four of the children walked to a school conducted by the Sisters of Christian Doctrine to meet Gilberte Voisin and walk home with her. When they reached the school, Albert pointed out a lady dressed in a long white robe, near a railroad viaduct just past the school. The other children reported seeing her as well. Over the next several weeks, they saw the lady thirty-two more times, generally in the garden of the convent-school. The final apparition was on 3 January 1933.
The children reported that the lady requested that a chapel be built at the site and stated that "I am the Immaculate Virgin". She also desired for pilgrims to come to the site and asked the children (and everyone) to "pray, pray, pray" and, in one of the last visions, revealed her "Golden Heart".
In the final vision, the Lady reportedly asked one of the children, Fernande, "Do you love My Son?" and she replied, "Yes". She then asked her "Do you love Me?" and Fernande again answered, "Yes". The Lady then stated, "Then sacrifice yourself for me" and bade them farewell before the child could reply.