I won't bore you with the details, but, the Blessed Mother dragged me, kicking and screaming, into the Catholic Church!!! Really, I only said, I wouldn,t have called it praying, one, uno decade, threw the rosary into my sock drawer and swore I'd never, ever do that again! Six months later I was Catholic!!!
So, the short answer is YES! Miracals, signal graces, and answered prayer!!! All that and more. BUT, as someone once said; "God is not a genie" and neither is the Blessed Virgin! Mary always points to Jesus and good son that He is Jesus always honors his mother. Mary's intercession is very effective. Remember the wedding at Cana. Mary said they have no wine. Jesus said so what! But he changed water into wine because His mother, Mary said to!!! Offer yourself to the Blessed Virgin, get a copy of "Total Consecration" by St. Louis de Montfort, otherwise known as Holy Slavery. It will help. Then take Moses' advice; Stand still and watch the deliverance of the Lord!!!
And please remember this isn't magic or some sort of spiritism!! It's walking by faith - it's the feast of Thomas the Apostle today remember what Jesus said to him; "...blessed are those who have not seen yet believe."