It is up to her to decide if she is an alcoholic or not.
I was similar to tour friend and my quit has been quite easy. I never craved alcohol. Cigarettes and I battle constantly, I can get 9 months or more and be back to a pack a day in one day. Alcohol - whatever I don't drink. I have absolutely no interest anymore. Am I an alcoholic or former heavy drinker? It doesn't really matter, I don't drink anymore. I have dealt with the demons I tried to escape with booze, I continue to work on improvement. The answer isn't in a label or self diagnosis. She probably knows she might have a problem. She will seek help when she seeks it.