15 Non-Catholics and reformers are therefore mistaken when because of this pretext they find fault with, or disapprove of, our devotion to the Virgin Mother of God, as if it took something from the worship due to God alone and to Jesus Christ. The contrary is true because any honor and veneration which we may give to our Heavenly Mother undoubtedly redounds to the glory of her Divine Son, not only because all graces and all gifts, even the highest, flow from Him as from their primary source, but also because "The glory of children are their fathers" ( Book of Proverbs , XVII 6).
Source: Fulgens Corona (Vatican.va)