You know who the Bible says is full of grace... and it was not Mary as far as I can tell...
John 1:14
The Word became flesh and made his dwelling among us. We have seen his glory, the glory of the one and only Son, who came from the Father, full of grace and truth.
Members of His family may now enter into God's Presence freely, being sealed and Justified by His Life in them by adoption. Presumably, the Magixsteeringthem has allowed that the mother of their god can be in the family of their god, but that does pose difficulties if she is the mother of their god and must enter the family by their savior's blood ingested.