To play devil's advocate, when I was living with my father and he was still drinking very heavily, I could see the early signs of dementia setting in. I couldn't tell if it was alcohol-related dementia or something else, or how bad it was, tho... impossible when someone is BP and that drunk all the time. But I could see the changes. Just my experience.

If you have spoken to your father on the phone and haven't noticed a difference, things can't be that bad- if there even is a problem...

I'm sure you wish you had a better relationship with your sister, but sometimes our sisters make that hard

Around here, taxi drivers can get you where you need to go if you give them an address, unless where you are going is off the beaten path.