I know how hard it must be with an alcoholic in the family. If he is abusive in any way, your Mam should leave him, but that's her choice. It usually takes alcoholics to hit total bottom before they admit there's a problem. There's not a lot you can do with him in denial. You can support your Mam with the difficulties she's facing, but that's about all you can do. It's up to your Dad to change and it's got to be his decision. Support your Mam. That's about all you can do at this point.
-------------------- Formerly HanSolo. IBS, OCD, Bipolar, PTSD times 3.