Blessed William Joseph Chaminade based his doctrine of Mary’s Apostolic Mission on the foundational doctrines of the Mystical Body of Christ, and of Mary’s Spiritual Maternity, Coredemption, and distribution of all graces.
In his own words:
Christ has ordained all concerns of religion that Mary participated and cooperated in all of them.
We do not go to Mary as our God, but we go to God through Mary, as faith tells us. He came to us through her.