Catechism of the Catholic Church §2682 — excerpt
Because of Mary's singular cooperation with the action of the Holy Spirit, the Church loves to pray in communion with the Virgin Mary, to magnify with her the great things the Lord has done for her, and to entrust supplications and praises to her.
This translation is under copyright, so only the cited words are quoted here. Follow the link for the full text. Translation: English translation of the Catechism of the Catholic Church, 2nd ed. (Libreria Editrice Vaticana), as posted at vatican.va.