J.H.
I agree with Jess. Go see her and tell her how much she means to you. If she gets upset and agitated with you, then leave. She is undoubtedly going through detox and is already wanting to come out of her skin. Once she gets into therapy and comes to terms with her addiction, she will be thanking you. You did the right thing. Let her be mad for now.
Tell your dad you would have done the same thing and that you love him. I would also urge all of you to get into some kind of family recovery or Al-Anon program, especially if you think any of you have codependent issues. I come from a long line of addicts and alcoholics. My recovering alcoholic dad is having severe depression and suicidal thoughts right now. He is about to start therapy and takes antidepressants. I truly feel for you. Trying to save your family from themselves...is scary and exhausting.
I wish you luck and good days ahead.