Certainly Mary was the earthly mother of Christ in His earthly form.
I still avoid calling Mary The MOTHER of God.
That is inappropriate, to me.
There’s an insinuation of Mary being over God in some nebulous sense that I simply cannot tolerate at all.
You still avoided the question. Can you, personally, say, “Mary is the mother of my Lord?”
You believe that God passed through all dimensions of time and space to insert Himself into human history and die on a cross, while at the same time remaining in His heavenly glory... but you can't grasp Mary's motherhood of God?
What's up with that?