By continuing to call her, it is obsessive, compulsive and not hope. She set a boundary, and knowing her disease, when she calls, it is her addiction, generally wanting something from you. She probably thinks you are a soft with no thought of your feelings. That is what addiction does.
You need to take care of yourself. Sit down with your God and look for some Good Orderly Direction as to the way He would have you go. As the saying goes, "If a door closes, another one opens." Sometimes it is a window and we have to make a decision to put our life into our God's Care.
My prayers are with you over the holiday season. Focus on others, your church, your family, volunteer at soup kitchens or shelters, and it will help to heal your heart.