The Virgin got up and said: "These witnesses to the time of my Son's Resurrection are enough for me..." Then she looked out the window and saw that the dawn was beginning to break. Her joy was great: "My son will soon resuscitate," she said. Then, kneeling down, she prayed: "Awake, stand in front of me and look, and you, Lord God Sabaoth, awake." Immediately, Christ sent the angel Gabriel to her saying, "You once announced to my mother the Incarnation of the Word, announce to her now His resurrection." Then the Angel flew to Mary and said to her, "Queen of Heaven, rejoice, because the One you deserved to carry in your womb is risen as He said." And Christ greeted His mother, saying: "Peace be with you"... And Mary said to her Son: "Before, my Son, I worshipped on Saturday, in honor of the holy rest after the creation of the world. Now I will worship on Sunday in memory of your Resurrection, and your rest and glory." And Christ approved (Saint Vincent Ferrer, Spanish Dominican, d. 1419).
Part of the introduction to the Mass states:
"The Fathers of the Church...frequently teach us that the mysteries of Christ, which the Church, our virgin mother, celebrates in the sacraments of Christian initiation, were accomplished in Mary, the Virgin Mother (Pref): the Spirit who sanctifies the womb of the Church--that is, the font of baptism--to bring forth children of God, sanctified Mary's womb so that she might bring forth the firstborn of many brothers and sisters (see Hebrews 2:11-15) ..."
The texts of the Mass celebrate Our Lady as:
--the Virgin Mother, (OP, see Pref) who, overshadowed by the Holy Spirit (Com Ant), became the mother of Christ, the bread of life (see John 6:35), by whom the faithful are nourished in the Church.
--the mother of light (Ent Ant), because she brought forth Christ, the light of the world (see John 12:46; Gos A, John 12:44-50). --the model of the Church (Ent Ant) because the Church is itself a virgin and brings to birth in the chaste waters of baptism a people of faith (Ent Ant), and in imitation of the mother of Christ makes its eucharistic offering (POG); and because those things accomplished in sign through the sacraments of the Church' were accomplished already in the Blessed Virgin. (Preface)
--the sanctuary of the mysteries of God (Com Ant), because she carried in her virginal womb' Christ, the sacrament of the Father: in Christ are hidden all the treasures of salvation and grace, and through him the face of the Father is revealed to us (see Luke 10:22; John 14:9).
From a homily by St Lawrence of Brindisi (1559-1619), a Capuchin-Franciscan priest:
Mary rejoiced in the conception of Christ, she thrilled with joy at His birth, and when she heard "Glory to God in the highest and on earth peace of men of good will" (Luke 2:13-14), the hymn echoed throughout the countryside by a chorus of angels. Mary was enraptured when the Magi came in adoration, and when she found Jesus in the temple; and she was even more joyous when she heard of and saw the great number and variety of miracles which He was working. Her joy grew more profound as she saw Him ascend into heaven, His seat of glory, accompanied by the angels. But on this day, she was filled with a happiness greater than all of these, greater than can ever be told. Just like the man who found the great treasure in his field, in a unimaginable manner Mary found an infinite glorious treasure in the Resurrection of her son, Jesus Christ.