My mom is 82 COPD, declining sharpness, She has always been a bit of a drinker, but now it just dangerous and sad. She will not admit she's drunk but yet can not even hold her head up. A couple of weeks ago she fell out of bed or almost out of bed with her leg against dresser holding her in.. I have talked to her friends and family, that come over and drink with her, told them it is not safe and can not continue. This has not stopped her, she tells me I can't tell her what to do. This happened tonight She was just pissed can barely keep her head up, I told her that its not fair as I am the one who as to take care of her. she proceeded to tell tough and that she was hungry, SHe was unable to fix herself another one and I told her though I'm not getting you one. I will be sleeping in travel trailer tonight, I can't keep enabling her. I'm at my wits end.
She needs to be placed in a secure facility that can deal with this kind of problem. You need to build a team with a social worker who can do an assessment and a doctor who can determine what other issues are in play besides drinking. Your mother may be self-medicating her depression or boredom, which is common in elders, and extremely treatable.
Priority one is her safety, and that may mean she needs to be in a different environment for a while, where she does not have access to alcohol or her triggers. A doctor can help you make that happen.