A point of proof against the Catholic exhaltation of Mary

"As he said these things, a woman in the crowd raised her voice and said to him, “Blessed is the womb that bore you, and the breasts at which you nursed!” But he said, “Blessed rather are those who hear the word of God and keep it!”"
Luke 11:27-28

This just seemed a little sidetrack story as I was reading through Luke the other day.  Though only two verses which kind of segue from the main narration just for a moment, I felt a profound truth is spoken.

I have had some exposure to the Catholic church and it's belief system, and I think I've almost heard the terminology of that woman in the crowd used to describe Mary - "Blessed is the womb that bore the Christ".

Yet Jesus doesn't acknowledge it at all.  If Jesus is God, and his earthly mother is a special 'sub-deity' (almost) then don't you think he would have acknowledged it when someone else brought it up?  Instead he points people to the Word of God and the need to stay true to it.  There is no evidence that Mary was anything but a humble, obedient and specially chosen young lady.  That's what the Word says, I wonder if Jesus was giving a command with a warning for the future?