You thought you were able to prove them wrong by now? Heather please listen don't fool yourself, the only one you seem to be proving wrong is God, and that nobody can do. Give it all to God and leave it in His hand, you just have to love and trust God with all your heart and might. God will make your path straight and give you much joy and peace in your heart. One day you will look back and wonder, why did I ever spent so much time fighting this, when God had better plans for me. God works in mysterious ways we do not understand sometimes, but He is always right and give us better than we want.
Lord open Heather's eyes and may she be able to concentrate on your love for her as you give her the peace the world or anyone else can't never give us. I pray in Jesus name amen.