Mary's "yes" was not a precondition for God to do what he did through her - as if God was waiting expectantly for a favor from the only one able to give it. Blasphemy!
No, the angel's message was a mandate: "You will be with child and give birth to a son, and you are to give him the name Jesus." There was no asking permission here, and Mary, being the godly, humble girl that she was, accepted this as the will of the Lord.
Nowhere in Scripture does Christ identify himself as the Son of Mary; neither does Scripture identify Mary as the Mother of God. Christ, rather, calls himself, "Son of Man" and "Son of God." "He will be great and will be called the Son of the Most High." Luke 1:32
Gabriel wasn't God's bagman and this wasn't a direct order for her to submit - leave that to people who call God "Allah".
Gabriel was simply prophesying what was to come. Mary's free will was not impeded in any way whatsoever, otherwise, you're characterizing the Holy Spirit as some kind of non-corporeal rapist. Do you really want to imply that?
"Be it done unto me according to thy word" is a voice of permission not submission.
Nowhere in Scripture does Christ identify himself as the Son of Mary; neither does Scripture identify Mary as the Mother of God. Christ, rather, calls himself, "Son of Man" and "Son of God." "He will be great and will be called the Son of the Most High." Luke 1:32
He doesn't declare Himself the second member of the Godhead, either. In fact, He was vague enough about the nature of His membership in the Trinity that it took several centuries to define both the Trinity and the hypostatic union. Since the hypostatic union defines that Jesus' two natures are INSEPERABLE, then it is impossible to say that Mary is not the Mother of God. If you deny this, you deny Jesus' divinity, end of story.
Additionally, if Mary's motherhood is of no consequence, can you explain why God bothered to be "born" at all? God created Adam out of dust. He could certainly create His own body in the same way or simply appear as an adult and begin His ministry right away. If the Lord wanted us to ignore Mary's motherhood, being born through her is an absolutely useless exercise on the part of God.