I've seen the same thing in my AW. When my daughter or I confront her, she will not admit that she is an alcoholic or that she has a problem...or even that she shouldn't drink.
Her response is "What's the big deal if I have a drink or two?". Yet, over the last couple of years, she has fallen several times, broke her glasses, broke my recliner, busted her nose, and finally broke her ankle. She won't deny that these things happened, but will not, or cannot admit that these are signs of a problem. She also hides her booze and lies about drinking.
I understand your frustration.