[ebb tide]

St. Thomas, Summa Theologica:

I answer that, In every genus, the nearer a thing is to the principle, the greater the part which it has in the effect of that principle, whence Dionysius says (Coel. Hier. iv) that angels, being nearer to God, have a greater share than men, in the effects of the Divine goodness. Now Christ is the principle of grace, authoritatively as to His Godhead, instrumentally as to His humanity: whence (John 1:17) it is written: “Grace and truth came by Jesus Christ.” But the Blessed Virgin Mary was nearest to Christ in His humanity: because He received His human nature from her. Therefore it was due to her to receive a greater fulness of grace than others.

[BlatherNaut]

Thanks, ebb tide.

"Holy Spirit, of Whom Mary is the spouse, have mercy on us."

http://www.hnom.org/litany_hnm.htm

[annalex]

There is nothing in the homily that contradicts the fullness of grace given Our Lady.