Exjunkie, if you see her on the bus, just be quiet. If she approaches you and becomes abusive, get off the bus. You should have no guilt about this girl. It sounds like she has made mess of her life and is continuing to do so. Let her go. SHe is bad karma for you in so many ways/ Look at the anxiety she is causing you without even seeing her. A toxic individula you don't need in your life.