Yes, the mother of his earthly body, but not the mother of the part if him who is God, and who created us all. - God the Son, the Logos, created Mary, just as he created you and me; how could she be the mother of God the Son?
Mary is merely a human who was given the most blessed calling of any woman. - She is not God in any way. - She cannot 'interceed' for anyone, only Christ himself can do that.