Melanie claimed a lot of visions that are pretty dubious. She was expelled from a convent for spending all day telling the townsfolk about her supposed visions instead of doing her duties as a nun. And the text she wrote claiming it was what Our Lady told her in the apparition at La Salette was put on the Index of Forbidden Books, and the Holy Office said it was not authentic and not doctrinally sound. Basically, the Holy Office compared the published text of Melanie with the private one she wrote down as a child and sent to Rome, and put the former on the Index and said it was not the same text as the original secret and not even doctrinally sound.
Melanie is not a credible source.
If you Yeti, the Pope, cardinals and bishops, in 1846, were told by Melanie ''Rome will lose the faith and become the seat of the Antichrist,’ I think you too would not believe her. If you were told that today you would say its already happened, she was right.
Heaven’s awareness of the freemasonic revolution against Christ and His Church was made known first to a French nun Sister Marie de St Pierre (1816-1848) and then by her request at La Salette in France on Sept. 19, 1846, where a crowned Mother of God appeared to two children. Among the most poignant predictions was that: ‘Rome will lose the faith and become the seat of the Antichrist.’ Three popes, Pius IX, Leo XIII and Pius X, approved this apparition, but the message was met with furious opposition from many bishops. It seems the Masons and some Masonic-controlled clergy already ensconced in the Church, must not have wanted any such revelations to be taken seriously.
Thirty-three years after the apparition, on 20th August 1879, a basilica at La Salette was consecrated, and the following day, August 21st, the Archbishop of Paris in France (representing the Melchisedech Priesthood and Melchisedech Kingship) crowned the statue of the Virgin of La Salette according to the prescription of the sacred Congregation of Rites. Heaven’s awareness, it seems, was given new impetus.
On the very same day as this coronation, 21st August 1879, as only heaven can co-ordinate, there occurred an active but silent apparition at Knock, a small town in west Connaught, Ireland, a place ‘ruggedly inhospitable and not conducive for agriculture.’

The above is the first attachment I was ever able to post. Delighted with myself.
I have written an essay on Knock.