Hi Nadia
Welcome to our board and please feel free to come here anytime.
One thing I would do is make sure her doctor is aware of how much she drinks. The doctor may already know, but if not the combination of some medications with alcohol can be very dangerous. I think that is very important.
As Smoke said, sadly we cannot change them until they really want to change themselves. Going to Al-Ateen, or Al-anon will certainly help you and connect you to many people who are going through the same thing you are.
Another suggestion is to get some literature from AA, including a meeting list and leave it somewhere that she might find it and read it when no one is around. It is unlikely that she would be receptive to you giving it to her, but if it is sitting on your dresser or somewhere that she would see it, I'll just bet she looks. It may not help now, but you never know and maybe down the road something might click.
Good luck and please keep us posted on how you are doing.
Hugs