This question has absolutely nothing to do with anything I said.
The Second Person of the Trinity has existed from all eternity, with a divine nature.
At a point in history, he was conceived in Mary's womb. At that instant, he began to exist with a human nature. Thus, from that time forward, he will always exist with a divine nature and a human nature.
He is one divine Person with a divine nature and a human nature.
The divine Person has existed from eternity. His divine nature has existed from eternity. His human nature began to exist when Mary conceived him in her womb.
Mary conceived him in her womb and gave birth to him. She is therefore his mother.
Because Jesus Christ is ONE PERSON, who is God, and Mary is his mother, Mary is called "Mother of God."
You said that Jesus did not get His divine nature from Mary. You said He got is human nature from Mary. Only God is divine. Jesus did not get His divine nature from Mary. Mary is not the mother of His divine nature. Ergo, Mary is not the mother of the divine God.