So now let me say that I'm not seeing it with this particular argument. Sure Mary said "yes" to God. So did Abraham. Abraham was asked to sacrifice his son and got right to the point of doing it. Yes, Mary may have risked her reputation and possibly even her life (though it's hard to believe God would ask you to have His Son and then let you be stoned before Jesus could be born). But the Apostles said "yes" and did risk their lives and most did give their lives.
There are likely better arguments to support the Catholic view of Mary. I don't find this particular one to be very compelling. Not that it really matters what I think. Each person has to decide for himself/herself.
goldenstategirl, I like you but that was a little too much for me to kid about!