Simon, when I read your posts, I can't help but remember what my family was like..and honestly, now I'm glad I was given a second chance by being taken from them at the age of twelve. Is there an Al-Anon, Codependents Anonymous, or Adult Children of Alcoholics group near you? From personal experience I know what it is to have a parent who is an alcoholic and in denial. I had to take care of my mom for a year and miss school because I was a 'special-needs' student and she did not advocate for me to be admitted as such in the school system where I lived...And I was only eight years old. Both your dad and sister are in denial of their problems and I wonder whether it's dragging you down....Please know I am thinking of you and I hope for your sake you can find the strength to deal with it all.