Dont worry too much
its just that when people are drunk, their feelings sorta get mixed up and they give mixed signals. She was probably drunk to the point where she sorta lost her self of conscience.
And i get the feeling that she wanted you to rest. Thats why she didn't disturb you while you were drunk, but i can tell that she likes you a lot.
Just relax and remember, there are good days and bad days. Yesterday was just probably one of the days where everything went out of hand.
Things are looking up. Don't think negatively because i can see that its only going to get better.