I am a mother of 1 AS and 1 RS, I know how your feeling as a parent I always was worried as well yet I knew I had to stop enabling and set boundaries at the same time I worried but what if and knew I would blame me. Everyone above is right you made the right choice and should anything happen your not to blame she has to want too get clean and do the work you can not do that for her as you know.
Big hugs from one mother to another
Your family will be in my prayers.