M.P.
She needs professional help. I'd suggest to her that she talk with her doctor. She can also call AA and ask for names and numbers for treatment centers. It's very difficult and nearly impossible for most people to quit on their own when they've drank heavily everyday for a year. Her body has adjusted to the point it needs the alcohol.
My cousin did stop on his own. He bought a book that told him which nutrients he needed and he bought those. However, he's a very strong willed person who spent the weekend in the hospital after being unconscious on the street. He knew that if he didn't stop he'd die. And there was no alcohol in the house. That was a much more extreme incentive than just coming to the realization one wants to live differently and whose SO is still drinking.