According to Orthodox/Catholic tradition (mariology), in this moment Mary is given to the beloved disciple (john), and all the faithful so that she would be in a position to pray for her children (the church) as a physical mother does. As the mother of Jesus (Mother of God), Jesus honers Mary in a unique way. (Honor your father and mother). Catholics see The Wedding Feast at Cana as evidence that Jesus takes his Mother's petitions very seriously. Seriously enough, in fact, that his first miracle (recorded), and the beginning of his public ministry would be at the petition of his mother.
New Living Translation (NLT)
3 The wine supply ran out during the festivities, so Jesus’ mother told him, “They have no more wine.”
4 “Dear woman, that’s not our problem,” Jesus replied. “My time has not yet come.”
5 But his mother told the servants, “Do whatever he tells you.”