Also, there are some great books as well as some online support communities that may be beneficial to you...
I am so sorry your family is suffering to live with the unconscionable and destructive behavior of your daughter. The best short-term and long-term coping strategy for this is to come to accept that you had/have no control over your daughter's behavior nor ability to change it. While she is sick, she is also the one who has made these choices and for that, you have done the absolute right thing to protect you and your family and disconnect from her. I know that is absolutely intolerably painful but it must be accepted as your reality. Inching towards acceptance will ultimately grant you the peace you so desperately seek. With the right support and continued fight, you and your husband can live through this.
I wish you strength!! Let me know if you'd like to talk more,