You're going to have to just rip that bandaid off - no more asking if she is unhappy. She will say no and will pull you back in. You've got to tell her you are done, you are leaving, and that the relationship is over. Unequivocally and without question or doubt. Don't make the mistake of asking her how she feels again. Just say it like it is, tell her, and tell her your plans for the logistical details. You do not owe this woman your life or your financial support. You owe it to yourself to get out and to be happy in your life again. Make a plan for the logistics, and then plan a time to tell her in person. She will be forced to stand on her own two feet and support herself. If she makes any threats to harm herself, call an ambulance. Her life is NOT your responsibility. That's my two cents.