What isn't true? That her Son is God?
And there are many other denominations who view our honour of the Virgin similar to you, but they have no qualms with the title of "Mother of God". In fact, I first learned the title when visiting my grandma at her Southern Baptist church as a young child.
Yeshua our Saviour is son of God Almighty Yahweh. He is given authority by the most High Yahweh because he is his son.
By declaring mary mother of God is just wrong, she is the mother of Yeshua the Messiah.
Yahweh chose her to be the vessel in which his son was to be born into the world to be the sacrifice for our sin, and Salvation for those who accept.
From the bloodline of King David right back to Abraham did Almighty Yahweh God plan our Saviour his son to be born into this world to be the sacrifice that would redeem those that believe and accept.
Yahweh Almighty sacrificed his son, in place of what Abraham offered in Isaac, it was through this faith that Yahweh Almighty God was pleased that he gave his son Yeshua our Saviour.
That is why Yeshua the Messiah was killed during passover, he became the lamb of sacrifice that the Jewish people offered each year at passover.
The unleavened bread was what the hewbrews ate, Yeshua became the risen bread of life.
Yahweh sent the Hebrews food from heaven, and Yeshua our Saviour was sent from heaven to feed us for eternal life.
Then Jesus said unto them, Verily, verily, I say unto you, Moses gave you not that bread from heaven; but my Father giveth you the true bread from heaven. 33For the bread of God is he which cometh down from heaven, and giveth life unto the world. 34Then said they unto him, Lord, evermore give us this bread.
35And Jesus said unto them, I am the bread of life: he that cometh to me shall never hunger; and he that believeth on me shall never thirst. 36But I said unto you, That ye also have seen me, and believe not. 37All that the Father giveth me shall come to me; and him that cometh to me I will in no wise cast out. 38For I came down from heaven, not to do mine own will, but the will of him that sent me. 39And this is the Father's will which hath sent me, that of all which he hath given me I should lose nothing, but should raise it up again at the last day. 40And this is the will of him that sent me, that every one which seeth the Son, and believeth on him, may have everlasting life: and I will raise him up at the last day.