Our Lady (the Blessed Virgin Mary) is the Mother of God.
Mary is the only person to have been preserved from Original Sin, so she is called the immaculate Conception.
She gave birth to Jesus while remaining a virgin, so she is called the Blessed Virgin Mary.
She was assumed body and soul into heaven at the end of her earthly life, and so did not die. This is known as the Assumption of the Blessed Virgin Mary.
Being endowed with these “glories”, Our Lady has a particular part to play in God’s plan of salvation. She is a creature just like any of us, yet because she was preserved free from Original Sin, she was given the grace to remain open to God’s will at every moment of her life. In this regard she acts as a model for sanctity.
She if of course the highest of all creatures and indeed, the highest of all saints, above every saint in heaven. The Church teaches that veneration of Mary points to Christ and gives Him glory and thus brings many blessings. It is important to remember that true and authentic devotion to Mary is always Christo-centric. She always points to Christ, so it is good to keep her own words in mind when we think of her and ask for her prayers. She tells us, as she told the servants at Cana, “Do whatever He tells you” (John 2,1-11).