You've been a Catholic for 50 years? If that's true, then I'm surprised that you didn't know what the Blessed Virgin Mary actually said on May 13th, 1917, which was the following:
And, it was on June 13th and July 13th, 1917, not May 13th, where the Blessed Virgin Mary spoke about Her Immaculate Heart:
The Blessed Virgin Mary is a powerful intercessor on behalf of humanity, and God first and foremost acknowledges and honors this. All She does is pray for and love souls, love the Father as His Daughter, the Son as His Mother, and the Holy Spirit as His Spouse, and serve Them by, for example, delivering helps to lead souls to the Holy Trinity and eternal life in Heaven. Satan hated Jesus (God Incarnate) so much that He killed Him. How much more would he hate the Woman Who brought God into the world as a man to defeat him and redeem mankind? It's because he hates Her that he tries to convince people to downplay or deny Who She is, what She's done and does, and the degree of influence that She has had and has, and believe that the faithful in Jesus's Christian (Catholic) Church worship Her as a god. It's evil, but to be expected of him.