I agree with Tigger, to quote Billy Joel, "You should never argue with a crazy mi-mi-mi-mi-mind." All it does is feed their self-pity and feeling of being attacked.
She KNOWS you want her to quit drinking. Saying it over and over isn't going to make her stop. She won't stop until she has her own reasons for wanting to.
Keep logging on, and you might try hitting an Al-Anon meeting. GREAT support, and you will get some excellent ideas about how to detach from her so you can do what you need to do without giving her more fuel for resentment.