Blanche

“God has never made or formed but one enmity; but it is an irreconcilable one, which shall endure and develop even to the end. It is between Mary, His worthy Mother, and the devil,—between the children and the servants of the Blessed Virgin and the children and instruments of Lucifer. The most terrible of all the enemies which God has set up against the devil is His holy Mother, Mary. He has inspired her, even since the days of the earthly Paradise, though she existed then only in His idea, with so much hatred against that cursed enemy of God, with so much industry in unveiling the malice of that old serpent, with so much power to conquer, to overthrow, and to crush that proud impious rebel, that he fears her not only more than all Angels and men, but in some sense more than God Himself. It is not that the anger, the hatred, and the power of God are not infinitely greater than those of the Blessed Virgin, for the perfections of Mary are limited, but it is, first, because Satan, being proud, suffers infinitely more from being beaten and punished by a little and humble handmaid of God, and her humility humbles him more than the Divine power; and, secondly, because God has given Mary such a great power against the devils, that, as they have often been obliged to confess, in spite of themselves, by the mouths of the possessed, they fear one of her sighs for a soul more than the prayers of all the Saints, and one of her menaces against them more than all other torments.”
― St. Louis de Montfort, True Devotion to Mary: With Preparation for Total Consecration