We call upon Our Blessed Mother in our times of need, under a variety of titles, often associated with a Church-approved Marian apparition. One particular devotion known as Mary Undoer of Knots is favored by Pope Francis. Originally a German devotion, it is also popular in his native Argentina.
If you targeted by a malignant narcissist, especially at church, life can get very complicated. Many, many knots will be tied up, so numerous that only God can straighten out this mess. This is the devotion I turned to when things became very tangled in my own life. I am amazed at the miraculous ways they've been untied.
For a discussion of female malignant narcissism, please visit my Female Bullies blog.