Sounds like your wife in an alcoholic. But there is really nothing you can do to help her. There is a lot you can do for yourself. I would see about hitting an alanon meeting or an open AA meeting. They are wonderful. I would read the stickies and educate yourself about the disease of alcoholism.
The best thing you can do is detach from her and her drinking. Obsessing about her drinking will do you no good. Keep posting if you have questions but please understand that love can not cure alcoholism, if it did, non of us would be here.