Hey Shamp-sizzle!
The most important thing to remember for both your sanity and hers is that she isn't going to quit/slow down until she is ready to quit/slow down and there is nothing, nada, zero, zip you can do about that.
The good news is you're a responsible drinker and you can lead by example and subtle suggestion. Just don't go the route of Jack Lemmon's lady friend in "Days of Wine and Roses."
All the best.