To a Catholic "Full of Grace" is what God commanded Gabriel to say to Mary, calling her not by her mere name, nor even by her title, but by her REALITY! God doesn't give titles without infusing the reality of the title. Mary alone, of all humans, received that title; she alone has that reality. If you are full of Grace, or full of anything that means there is not room for anything else. If Mary had had sin, she would not have been FULL of grace, and Gabriel would have been speaking error. Thus this small phrase points very clearly to Mary's Immaculate Conception. In fact, the phrase doesn't make sense without it.God bless.
I never noticed that before. Gabriel did not address her by name, but by description. "Hail, full of grace."
The problem with your explantion, you know, is that "kexaritwmevn" in Greek is ONE word that means "favored one" (favorite?). The words "full" as you use it is a different Greek word....plevnw, I think. It doesn't appear in the text...not the one that I have, anyway.