Hi Darkhunter.
It's my first time here so I don't feel qualified to give you an answer. Seems to me though that you do have to share this burden with someone. Maybe you've started in the right place by doing it here!
Is your family doctor an option? Or maybe Al-anon could be a help.
I've experienced so many in-family problems with the dreaded booze that it's difficult to know where to start. If I come up with anything I think might be useful to you I'll post again.
Good luck. Oh yes, and keep on loving your Mom.