Cynthia, Mary was presented to God in the temple at the age of three and lived there for eleven years. She vowed to consecrate her entire life to God and be a virgin forever. When she left the temple, she was betrothed to St. Joseph an already elderly man. This was done by the temple priest to protect her vow and have someone take care of her. When the angel Gabriel appeared to Mary to announce that she would bear a son, she remarked as to how this could be possible when she had no relations with any man. But again, if she was going to eventually have a real marriage, she would not have made such a statement. The reason for her answer being that she was consecrated to God to be a virgin all her life.
In those days, ‘cousins’ were directly referred to as brothers and sisters which is still being followed to this day in the country of India from where I come from. James and John were the sons of Zebedee and cousin of Jesus. If Jesus had brothers and sisters He would not have entrusted His mother to the care of St. John at the foot of the cross and through this sign given her to the whole world as their mother.
Regarding her Immaculate Conception, this was declared by Mary herself in apparitions at Lourdes when she appeared to St. Bernadette . As for her queen ship, it is stated in Revelation, 12:1
The divine healing which takes place at Lourdes in France and Fatima in Portugal till date comes from the power of God alone through the Holy Spirit. Mary only intercedes and prays for us.
I hope I have helped in some way. God bless! Maria.
I beg to disagree with the declarations stated here regarding Mary the human mother of Jesus Christ, the Son of God. Mary is mortal and finite, had no divine character nor power, and the Bible never referred to her as "queen of heaven and earth." She bore the child Jesus by the power of the Holy Spirit, as her firstborn, after which she and Joseph had other children, one of whom was James (referred to by Paul "as the brother of the LORD") and in Mark 3:31-32 the Bible says "Then Jesus' mother and brothers arrived." (v.31). Also in Matthew 12:46-47.