Jesus is not God in your theology?
Sigh...
When a person (a Christian at least) says 'GOD'; to me that implies the GODHEAD: all three parts of the Trinity.
Thus, one cannot be the mother of 'god' for HE3 has ALWAYS existed.
Jesus; however; is merely (bad choice of word) ONE of the 3.
HE did have a 'mother' if you wish to say so, and the bible certainly does.
Mary was the vehicle that supplied 1/3 of 'god' with flesh.