Wedding with unspeaking family members

Dear St. Rita:
I desperately need your help to get my mature children to reconcile with my sister and my father.
I want them all to be in my Wedding Party but, currently they are not speaking to one another.
Please soften their hearts and open their minds inorder to bring about this impossible task. I believe all
things are possible with you intervening on my behalf through our Lord and Saviour. Amen