It honestly sounds as if you are making good headway and progress in your life in order to distance yourself from the unwanted and otherwise unwarranted actions of your family.
Going to law school is great. You can do a lot of good with that degree. You can help a lot of good people out with that degree. Devote your time to making sure you make it through law school (sober) and then after life calms down (does it ever really calm down enough?) try and pick up the other pieces. What is important right now is what you do for yourself. Better yourself through education and being sober. The rest will eventually fall in line.