Yes, go to Australia...
As a mother of 4 grown children who all know the challenges I face with their dad, I am GLAD knowing they have their own lives. It was bad enough that they grew up with the cr*p and despite it wound up amazingly well-adjusted and have built nice lives--I am so happy seeing that the alcohol is no longer part of their lives even if it means I see them less. I'd only feel guiltier if I felt I were dragging them back in.