Christ was God before Mary was born..He did not need Mary to be God
“Need” is NOT the issue here.
Who came from Mary’s womb?
Jesus Christ, both Man and God!
If you persist in attempting to explain the mysteries of faith in terms of human understanding, you will end up an atheist.
Would you have a problem saying Mary is the Mother of God Incarnate?
He needed the Blessed Mother to become God incarnate, the Word made flesh.