Thus the term *mother of Jesus* conveys that thought far more precisely, which seems very likely that that is the reason the Holy Spirit used it instead of the term *mother of God* which could too easily lead into incorrect doctrine and theology and worship of someone besides God Himself.
As I explained elsewhere on this thread, this history is important. The crisis at the time of the First Council of Ephesus was that there who denied the Divinity of Christ: the fact that He is a Divine Person, from which it follows that what is predicated of Christ, is predicated of God.
Everyone, even those confused by heresy, conceded that she Mary was the mother of Jesus. That was not in question. The question in dispute, however, was whether Jesus is divine, and was divine even from the moment of His conception --- and of course before His conception, for all ages of ages.
Some of those who were in error about this, said that He was a good man who, after a life of virtue, kinda "graduated" and was made God in the end.
The title "Mother of God" was not adopted in order to add a new layer of honor onto Mary, or to invent some new status, but as a way to assert the eternal and continuous Divinity of Christ. So, if Mary is the mother of Jesus, she is the Mother of God.
You can't quite "get" "Mother of God" unless you know precisely what question it was answering.
Therefore, the title “Mother of God” is less Mariological than it is Christological.