Then what the heck was she doing marrying Joseph?
She is the sanctuary and resting-place of the Blessed Trinity where God dwells in greater and more divine splendour than anywhere else in the universe, not excluding his dwelling above the cherubim and seraphim. No creature, however pure, may enter there without being specially privileged.
Gee, isn't Mary SPECIAL?
Ol' Joe didn't get to 'enter'; doncha know...