I guess my take on it is this. If you totally stop the AOS and start ignoring her, would she know why? Deep down she would know she can't treat someone like that and expect them to be there for her and help her. She would start to feel the loss due to her actions. I'm not sure what your coach thinks you are gaining by continuing these AOS, when you don't even live there! You've got your own life now, you can't be bothered to mow her lawn and do her dishes. She made her decision, let her feel the ramifications. Go enjoy your life. There must be something else you'd rather be doing than mowing that lawn!