I know that Baptists object strenuously to calling Mary the "Mother of God". Christ is God and Mary is his mother. So Mother of God is what she is. It doesn't mean that Christ inherited his divinity from his mother, but because he is God and she is his mother then he is the Mother of God. Just like Barbara Bush is the the mother of the President even though her son didn't inherit the presidency from her. I don't hold with much that Catholics say about Mary, but she is worthy of honor. I now know that she wasn't an eternal virgin or that she was free from sin. I also see that it is a stretch to call Mary OUR mother just because Christ said to John "Behold your mother" on the cross. But I can't think of one good objection to calling Mary the Mother of God other than it is "too Catholic."