Great! Now we're getting somewhere. You see, we don't see "hail" as anything but the greeting you've noted. You're challenging the wrong part. What does it mean that she was "filled with grace"?
All who are in Yeshua are filled with the very same grace.
.
What Catholic version of the Bible are you looking at? It seems the stamped version of the USCCB has this:
Luke 1:26-30 NABRE
In the sixth month, the angel Gabriel was sent from God to a town of Galilee called Nazareth, to a virgin betrothed to a man named Joseph, of the house of David, and the virgin’s name was Mary. And coming to her, he said, “Hail, favored one! The Lord is with you.” But she was greatly troubled at what was said and pondered what sort of greeting this might be. Then the angel said to her, “Do not be afraid, Mary, for you have found favor with God.(NABRE)
I will note there is no footnote either saying some manuscripts have “full of grace.”
So at least for the official RC English Bible they are settled on the matter. It is “favored one.”