SPM: So sorry to hear about your situation; abandonment is so hard to deal with. I've become convinced that a physical death is easier to cope with than this mess. I can't really add much to what's already been said, except that you have people who are thinking about you and hoping for your healing process. One step at a time. You control yourself; try to learn from this, and refuse to be a victim. Show empathy for her, hard as that is. Forgive her; hard as that is. Try not to let her have power over you; you control your emotions and your actions.
