Okay, I’ll offer a little more, so you can see why the woman you quoted called Mary “the most beautiful being ever created”.
Catholics teach that Mary was saved (kept from original sin) by Jesus from the moment of HER conception. Yep. It’s called the Immaculate Conception. Hang in there, and I’ll explain.
First, the easy part. Certainly the merits of Christ’s cross can be applied backward in time, to the people who lived before His Incarnation. So, it is possible that the grace of Calvary could have been applied back to Mary, right?
But why from the moment of her conception?
That’s the other easy part. Here are two of several aruguments from the Bible.
1st. The angel Gabriel greets her, in the Greek, *kecharitomene *(Lk 1:28). You might recognize “chari”, which is same part of the word for grace. The first Bible translation from Greek used the phrase “full of grace.” Hence, Catholics pray, with the angel, "Hail [Mary], full of grace (Lk 1:28). The sense of kecharitomene is that it means a filling with grace to the highest degree. Since we all have some tendency to sin, we are not completely filled with all God’s grace–our sin partially rejects some of the grace that He would have for us. The messenger from heaven confirms that Mary had no such rejection because she did not sin. Remember that Adam and Eve had no sin before they sinned.
Which brings us to
2nd. Christ is the new Adam (1 Cor 15:45). The first Adam was made out of the earth (Gen 2:6). At the time of Adam’s creation, there was no sin in the world. The earth was pure and good.(Gen 1:31). The last Adam–Christ–was formed out of the womb of the Virgin Mary. In order for Christ to be at least equal to the first Adam, the raw materials of Christ’s body had to have been pure and good, too. Therefore, we can see that Mary had to be without sin!:bounce: . I like that comparison. The important thing to note is that this teaching is not so much about Mary as it is about Christ.