I'm sorry for your loss, but I am happy about what you have gained. You have stayed sober throughout this sad and frightening ordeal. You were THERE for your Dad, and for the rest of your family, when it really counted.
That's what living a sober life allows you to do--to suit up, and show up, and to be the kind of son, brother, friend that you would like to be.
Hugs, and may you all be at peace.