Just gonna share this tidbit I learned recently. Then again idk how old you are, but if you're in your 20's it's practically impossible to be blackout drunk unless you legit have brain damage. So either you guys are 30+, she has brain damage, or she just doesn't have the decency to conjure up the truth to your face because she's too ashamed of it.

IMO, she seems very much to be a liar and a manipulator, and does not care enough for herself or her own safety to be drunk around other strangers. If she doesn't care much for herself, she won't care much for anyone else.

Just stop talking to her. The best closure you will get from situations like this is moving on.