Brian, in the New Testament the word "God" (Theos) generally refer to God the Father. So in order for Mary to be the mother of God, she would have to be the mother of God the Father, as well as the triune Godhead. Do you see how absurd that is? And do you NOT SEE that since God the Holy Spirit did not want Christians to fall into this error, He has taken care to refer to Mary always as "the mother of Jesus".
Nehemiah6
Do you NOT SEE that if God the Holy Spirit did not want Christians to fall into this error, He would have taken care to ensure that all references to "God" would refer exclusively to the Father? In which case, we would have three distinct Gods with different names rather than a unified triune God.
Perhaps you missed it the first time, so I'll repeat it for you: "one God in three Divine Persons." According to your reasoning then, and to avoid confusion, we should never refer to "God" unless we mean all three Divine Persons of the Trinity together. We should refer only to the Father, the Son or Jesus Christ or the Saviour, and to the Holy Spirit. Do YOU not see how absurd that is?
"For Mary to be the mother of God, she would have to be the mother of God the Father." Not so. To be the mother of God, Mary would have to be mother of only one of the three Divine Persons since each is God. And lo and behold, she is !! She is the mother of Jesus, God the Son.
But, you also failed to perform due diligence before writing your first post. The Catholic Church is quite specific that its teaching of Mary as the "Mother of God" is in direct reference to the Redeemer, and that personage of God is Jesus Christ. You may dislike the Catholic Church for a broad range of reasons -- many of which, I'm sure, are justifiable, given its history, but that dislike should be based on facts.
Catechism of the Catholic Church
(the official teaching of the Catholic Church)
Part One: The Profession of Faith
Section Two: The Profession of the Christian Faith
Chapter Three: I Believe in the Holy Spirit
Article 9:
Paragraph 6. Mary - Mother of Christ
963 ... "The Virgin Mary ... is acknowledged and honored as being truly the Mother of God, of the Redeemer. ... "Mary, Mother of Christ."
Perhaps it would be more productive to spend time on substantive issues rather than on interpretive semantics.