I have a brother who gets himself in trouble because of drug use...sometimes this lands him in trouble with the law. My mother always softens that blow for him in one way or another. His behavior never changes, because he has never faced a stiff enough consequence to want to make the changes he needs to make.
In my opinion, "helping" an addict ONLY helps to keep them sick. ( And honestly isn't healthy for the person doing the "helping" either)
I'm sorry your family has to deal with addiction. I know how much it sucks for all people involved.