Elba I believe the saying is that life sometimes throws us a curve ball, or something like that. Basically, shit happens. You had your day all planned, all nicely set up and then, bam, all that business with your dad.
It's thrown you, my lovely, knocked you off balance that's all. You can get back up, you can get back on track. You know you can. When you're ready.
Regarding the power of attorney and everything else - if you don't want to do it, then don't. You owe him nothing and no-one will think bad of you. People who don't know what you've been through don't matter and those that do will understand.
Do what is best for you. You have to make your sobriety a priority and that means putting your needs first. Try not to stay up too late tonight. Give yourself permission to grieve, let it out, acknowledge it and then put it to bed for now.
You too. Do the drill - have a big drink of water, clean your teeth, jammies on and into bed x