I'm not sure you should focus too much on fixing things because I don't know that you can. It sounds like the people in your life are very angry and just need to deal with this in their own way. I think your energy would be best focused on staying sober today and from here on and allow them to see the changes in your life.
A huge lesson for you - the friend needs to go. This is why it's so very important to get toxic people out of your life.
Have faith that you can get through this and allow your family the time they need to deal with it.