Answer. . .
UPDATE: John Allen has a few more details on this story. Unfortunately, the link takes you the site of the NCR, so have holy water and the Padre Pio Shorter Prayer of Exorcism ready in order to clean your computer of dissenting mal-ware and the infamously destructive McBrien-Chittister Trogan Horse virus. (h/t: Allan).
Does the Virgin appear to people and give them messages? It is entirely within the realm of possibility. However, belief in the authenticity of the alleged apparitions and veracity of the alleged messages in no way impinges on the salvation of Catholics. In other words, you can be a perfectly good Catholic, fully redeemed, true, good, and beautiful and never once pay the least bit of attention to any Marian apparition. You can, in fact, actively disbelieve that they occur without eternal consequence.
Why? before any apparition can be considered authentic, the Church--the Body of Christ on earth--must investigate the claims of those allegedly receiving the messages and verify the orthodoxy of the messages. If a message is found to be wanting in terms of its orthodoxy, then we know the message is not from Mary and cannot be held as true. If the message is deemed orthodox, that is, fully in line with the tradition of the Church's teaching on divine revelation, then all Mary is doing is repeating what we already know to be true. If Mary is simply repeating what we already know to be true, then there is no point in claiming that we must all listen to the message. We already have the message.
You will object here and say, "But Father, shouldn't people listen to Mary?" Yes, they should. And she has plenty to say to us in scripture. But not listening to her as an apparition is not going to send you to Hell. Our salvation is determined by one thing and one thing only: the degree to which we freely choose to cooperate in the "once for all" salvific death/gift of Christ on the Cross and his glorious resurrection from the tomb. Nothing an apparition of Mary can say or do can change that.
Well, what about people who find comfort and strength from these apparitions? More power to 'em! Go for it! If an apparition brings you closer to God through Christ and his Church, then I say: buy those place tickets and pack your bags for a trip to see Mary. But you are no more "saved" for going and no less "saved" for staying home. If the Church has declared that a particular apparition is false or the messages delivered are errorenous. then you are obligated to avoid those apparitions. Mary, the woman who said YES to becoming the Mother of God, is the model of ecclesial obedience. She would never tell anyone to disobey those given authority by her Son.
What I have no tolerance for is the false claim that Catholics are required to believe in this or that apparition because the Church has approved the apparition. I was told once that belief in the Fatima message is required for salvation. The only thing the Church says about any Marian apparition is whether or not there is sufficient objective proof that the apparitions are supernatural in origin and whether or not the messages conform to infallible Church teaching. Church approval simply means that it appears as though the apparitions themselves are legitimate and that the messages delivered are free form error. Apparitions that deliver heretical message are ipso facto false. Nothing more can be assumed about this imprimatur.
Scripture, tradition, and right reason clearly teach that there can be no new revelation to the Church. None. If Mary appears and proclaims her Son to be the Messiah and asks all present to pray the rosary, fast, do charitable works. Great. But we already know to do all of that. If she appears and proclaims herself to be the Messiah and asks those present to start consecrating bread and wine to become her body and blood for our salvation, it's Satan, lying to them. There was a Marian cult in the U.S. a few years back that actually celebrated "Marian Masses" where the priest "changed" bread and wine in the body and blood of Mary in imitation of the real Mass. He and his cultists would take a "Marian communion" after the regular, sacramental communion. Some of my own Dominican brothers were involved in preaching the gospel to these people and bringing them back into the Church.
Mary herself was no doubt upset at this blasphemy againstg he Son.
No new revelation. Not from a priest. Not from a bishop. Not from a pope. Not from a angel. Not from the Mother of God herself.