Hi, Blueeyes. I looked at your original post to remind myself of your dad's problems. He has hep C and has had no treatment for it, correct? As long as he continues to drink, there is really nothing anyone can do to help him. Your mom does have the right to remove herself from the situation, both physically and emotionally. I opted to do that with my own mother. I don't even know if Lactulose would help with the encephalopathy as long as he continues to drink. He probably doesn't see a doctor on a regular basis, nor would he want to be followed by a hepatologist, as he knows they will tell him he has to stop drinking.
I really don't know what to tell you except to take care of yourself in all this. I saw that you posted in the Caregiver's forum, which is good. You will find others there in the same circumstances.
Hugs,
Connie