Hi Mcallister, welcome!
It sounds like you really want things to work out with your girlfriend, but are having your own problem with drinking. If you want to support her in her recovery, you need to step up and stop too. I really recommend that you quit for yourself, however.
Drinking has messed up a bunch of opportunities for me
Keep reading the posts here for advice and and support. It isn't an easy thing to do, but it is worth it. Get into AA or NA, get a sponsor and work the 12 steps. Educate yourself on what others have done to quit and maintain sobriety.
Be willing, honest and keep an open mind. You can go far with those three things