What are my options if my 14 year old daughter does not want to see or have anything to do with her father?

She has told me on several occasions that she wishes he would just disappear and she wouldn't have to deal with him anymore. He has a drug problem and has had since before our divorce 2 years ago. She has been aware of this since before the divorce, even asked me long before I filed for divorce if he was doing drugs. He has very limited visitation, she is not allowed at his home, he is not allowed to transport her in a vehicle, or have overnight visits. All of this is due to him admitting in court that he does drugs and would do them with her if she wanted to try them because it would be better than her doing them alone. He has told her on several occasions the same thing which he does not want to hear and upsets her greatly. He only calls her maybe once a week or every other week. Always last minute and she usually already has plans then. I've always told him he could see her whenever he wanted, as long as he was not under the influence at that time. She has just been diagnosed with Crohn's disease and stress is a big factor in that. I'm wondering about going back to court to either get a restraining order or terminate rights to reduce her stress and so she doesn't have to deal with it anymore. There is much more to the story, but I'm running out of room.