Absolutely Catholics do.
Actaully, Catholics do.
When therefore we read in the writings of Saint Bernard, Saint Bernardine, Saint Bonaventure, and others that all in heaven and on earth, even God himself, is subject to the Blessed Virgin, they mean that the authority which God was pleased to give her is so great that she seems to have the same power as God. Her prayers and requests are so powerful with him that he accepts them as commands in the sense that he never resists his dear mother’s prayer because it is always humble and conformed to his will.... St. Louis de Montfort, in Treatise on True Devotion to the Blessed Virgin, #27, 246.
http://www.ewtn.com/library/Montfort/TRUEDEVO.HTM
Catholics claim that Mary was preserved from sin through God's grace, not through her own power--as the angel Gabriel says, she was "full of grace" (Luke 1:28) even before Jesus was conceived in her womb.
Being full of grace does not mean free from sin. On the contrary, if there is no sin in someone's life, there is no grace God can show them.
Grace is given only to those in sin. Without sin, there is no need for grace.
Also, ALL believers have the same grace as Mary does.
Mary and Grace
http://biblehub.com/greek/5487.htm
Luke 1:28 And he came to her and said, “Greetings, O favored one, the Lord is with you!”
The word grace used in this passage in Luke is used in one other place in the Bible and that is Ephesians 1 where Paul tells us that with this same grace, God has blessed us (believers) in the Beloved. IOW, we all have access to that grace and it has been bestowed on us all.
Ephesians 1:4-6 In love he predestined us for adoption as sons through Jesus Christ, according to the purpose of his will, to the praise of his glorious grace, with which he has blessed us in the Beloved.
Greek word “grace”
charitoó: to make graceful, endow with grace
Original Word: χαριτόω
Part of Speech: Verb
Transliteration: charitoó
Phonetic Spelling: (khar-ee-to'-o)
Short Definition: I favor, bestow freely on
Definition: I favor, bestow freely on.
HELPS Word-studies
Cognate: 5487 xaritóō (from 5486 /xárisma, "grace," see there) – properly, highly-favored because receptive to God's grace. 5487 (xaritóō) is used twice in the NT (Lk 1:28 and Eph 1:6), both times of God extending Himself to freely bestow grace (favor).
Word Origin: from charis
Definition: to make graceful, endow with grace
NASB Translation: favored (1), freely bestowed (1).
Being full of grace does not mean free from sin. On the contrary, if there is no sin in someone's life, there is no grace God can show them.
Even those who have not sinned personally need grace to overcome the curse on Eve's descendants--as Paul says in Romans 5:14, "death reigned from the time of Adam to the time of Moses, even over those who did not sin by breaking a command". All believers receive grace, but all are not "blessed among women"--Elizabeth is drawing a contrast between all other women and Mary here. The Ephesians passage is using a verbal form of the word (ἐχαρίτωσεν); the form in Luke is a gerund being used as a title of address (κεχαριτωμένη). Luke's form is similar to the verb tense of Ephesians in that it refers to a completed action, though, which highlights the significance of the angel's statement: Mary is already full of grace even though Jesus has not been born and atoned for sins yet, in contrast to every other believer who will not receive grace until after the Crucifixion.
I'm about to turn in, so will reply to any follow-up another time. Thank you for your comments.
http://www.ewtn.com/library/Montfort/TRUEDEVO.HTM