You can't get through to anyone who has alcohol abuse. They have to hit bottom before they reach the top. Many prefer to wallow in alcohol and it will eventually lead to death. It's best you stay away from your ex and if she is bothering you put a report into the police. By keeping in touch with her (she's needy) but she could turn mean due to the alcohol she consumes, you are enabling her behavior. You can't save the world, but she has to learn to save herself! Walk away!