Mary is the Mother of God. She was united with Jesus on earth as no other human being was or could be – in an intimacy that does not cease in heaven. Mary is the Queen of Heaven, and in her motherhood she is quite close to us. ( Catechism of the Catholic Church 972)
Yes. Since the beginning of the Church, experience has taught that Mary helps. Millions of Christians testify to it. ( Catechism of the Catholic Church 967-970)
Being the Mother of Jesus, Mary is also our Mother. Good mothers always stand up for their children. Certainly this Mother does. While still on earth she interceded with Jesus for others; for example she protected a bride and groom in Cana from embarrassment. In the Upper Room on Pentecost she prayed in the midst of the disciples. Because her love for us never ceases, we can be sure that she will plead for us in the two most important moments of our life: “ now and at the hour of our death”.
No. Only God can be worshipped. But we can revere Mary as the Mother of our Lord.
(Catechism of the Catholic Church 971)
By worship we mean the humble, unconditional acknowledgment of the absolute superiority of God over all creatures. Mary is a creature like us. In faith she is our Mother. And we should honor our parents. There is a biblical basis for this, since Mary herself says, “ For behold, henceforth all generations will call me blessed” (Lk1:48b). So the Church has Marian shrines and places of pilgrimage, feast days, hymns, and prayers.
( Questions and Commentaries cited from the Youth Catechism of the Catholic Church)