Boy did I screw up with her big time!?

You should apologize. You should also not get "messed up" in front of her. It's not a sign of responsibility when a guy can't stay sober. Apologize in a very heartfelt way, telling her exactly how you feel. If she likes you, she will accept the apology. If she doesn't accept the apology after one or two times, then she's over you.