Here are a couple.
How great then should be our confidence in this queen, knowing how powerful she is with God, and at the same time how rich and full of mercy; so much so that there is no one on earth who does not share in the mercies and favors of Mary! This the blessed Virgin herself revealed to St. Bridget: “I am,” she said to her, “the queen of heaven and the mother of mercy; I am the joy of the just, and the gate of entrance for sinners to God; neither is there living on earth a sinner who is so accursed that he is deprived of my compassion; for everyone, if he receives nothing else through my intercession, receives the grace of being less tempted by evil spirits than he otherwise would be; no one, therefore,” she added, “who is not entirely accursed” (by which is meant the final and irrevocable malediction pronounced against the damned), “is so entirely cast off by God that he may not return and enjoy his mercy if he invokes my aid. I am called by all the mother of mercy, and truly the mercy of God towards men has made me so merciful towards them.” And then she concluded by saying, “Therefore he shall be miserable, and forever miserable in another life, who in this, being able, does not have recourse to me, who am so compassionate to all, and so earnestly desire to aid sinners.”*
Liguori, A. (1888). The Glories of Mary https://ref.ly/logosres/glrymaryliguori?ref=Page.p+33&off=1120&ctx=ing+to+her+prayers.
~How+great+then+shoul (New Revised Edition, pp. 33–34). New York: P. J. Kenedy & Sons.
If you do not believe Mary holds a royal office of Queen mother see 2 Chr 15:16 and Jer 13:18. I hope you believe Jesus is a king who sits on the throne of his father David.
says, that the kingdom of God consisting of justice and mercy, the Lord has divided it: he has reserved the kingdom of justice for himself, and he has granted the kingdom of mercy to Mary, ordaining that all the mercies which are dispensed to men should pass through the hands of Mary, and should be bestowed according to her good pleasure.* St. Thomas confirms this in his preface to the Canonical Epistles, saying that the holy Virgin, when she conceived the divine Word in her womb, and brought him forth, obtained the half of the kingdom of God by becoming queen of mercy, Jesus Christ remaining king of justice.†
Liguori, A. (1888). The Glories of Mary https://ref.ly/logosres/glrymaryliguori?ref=Page.p+27&off=1083&ctx=+to+thee%2C+O+Lord%2C”†+~says%2C+that+the+kingd (New Revised Edition, pp. 27–28). New York: P. J. Kenedy & Sons.