Interesting topic. I went through a phase that lasted a few years, where i would drink a bottle of red 5 nights a week. My tolerance for wine and booze in general was high. I would sometimes do 2 bottles on weekends, or 6-8 beers. I had ways of managing hangovers, plenty of water before bed, eye drops in the morning, solpadeine for breakfast etc. I was working in the hotel and was able to function fine, it didn't really affect my job.. now that im in my thirties, and working a tough job which is very technical and requires constant brain power, I was not able to perform at work and noticed this fairly quickly. I was lucky that i had 4 weeks of training before I joined the team, as it allowed me to gradually reduce my alcohol intake.
Its not something you can just do overnight. I would never consider myself an alcoholic, but I was drinking regularly, sometimes bingeing at the weekend in town but mostly at home w the girlfriend, but it became too regular, and too easy and the enjoyment eventually goes out of it. Also you notice how much better your quality of sleep becomes. And other functions improve like memory and exercise.
Paul, if you try to emphasise the benefits of a few nights without wine, the rest comes naturally and she will notice an improvement in her overall well-being. I remember proudly saying to my g-friend that I only drink a bottle of beer or a glass of wine per night, but thats still too much and my g-friend explained that to me without being a moan