Fr. Heimerl: Of course the Blessed Mother is ‘Co-Redemptrix’The pious tradition of the Church has always known this and always understood it correctly. Is the Blessed Virgin Mary “Co-Redemptrix” and “Mediatrix of Grace”? Of course she is, I would say, because it was only through Mary’s “Fiat” that the only redemption through her Son became possible, and it was only through her that God gave us the fullness of grace in Jesus Christ. The pious tradition of the Church has always known this and always understood it correctly. No one would seriously have thought of “deifying” Mary or denying Christ’s unique.