Catechism identifies M as our Heavenly Queen.
Catechism of the Catholic Church (New York: Doubleday, 1997), §966, p. 274.
Finally, the Immaculate Virgin, preserved free from all stain of original sin, when the course of her earthly life was finished, was taken up body and soul into heavenly glory, and exalted by the Lord as Queen over all things, so that she might be the more fully conformed to her Son, the Lord of lords and conqueror of sin and death.