How do we know that this lady's name was even Mary, much less the mother of Christ? There is no known existing image of either her or her exalted son so how in the name of God can we identify them by a picture? The same can be said for all of the prophets.
What we see in our mind as a holy image has been planted by artists a millenium or more after any of them lived. Therefore this being anything close to the "real Mary" is strictly in the eye of the beholder. However anyone with enough faith to believe this to be Mary and to take offense the bible offers a solution written by the same great prophets who would stone an unwed pregnant teen:
"If thy eye offendeth thee, pluck it out!"