The word for *Lord* is not the same word as the word for *God*.
By presuming that it means GOD, it is only by presumption, not what is actually being said.
Saying that God has a mother, makes Deity under Mary, it gives Deity a beginning, making God less than God and elevates Mary above the Godhead.
To say that Mary is not the mother of Jesus and therefore of God denies the humanity of Christ. His humanity did enter into time on March 25th when Mary said “yes.”