Hello, thanks for contacting me again.
What a horrible situation! You are right to want to set boundaries. It is not healthy for you to put up with her angry abuse and it isn't helping her any either. Let her know that you are glad to talk to her but only when she is sober/drug free and let her know that she can not dump her anger on you. If she doesn't like it, she won't call. If she gets angry and is abusive, hang up. If she is threatening to hurt herself call the police. She can not make these kinds of threats without consequences. The more times she is put on a 72 hour hold the more likely she is to get the help she needs. I encourage you not to abandon her completely, but set firm, clear boundaries. If she calls when it is not convenient for you to talk, don't answer it, let her leave a message. You do not need to be at her beck and call. I hope that is helpful to you, let me know if you have further comments or questions.