Was she only drunk?

No. If I were you I wouldn't get her drunk, but you may want to invite her over for some drinks with just you and she present. Some girls use their girl powers just to see if they can get you interested. Others use them to bust a move. She obviously likes drinking. If you can get her in the mood while sipping something you both like (different drinks are okay) have some good food ready to snack on. Definitely give her those glances and try to touch her hands and she if she responds in turn. If she allows little physical gestures to her hands, shoulders, tummy, try to kiss her lightly. If she allows you to embrace her make sure you are in a comfortable setting to see if she will let you lay down on the sofa. If so ask her if she wants more privacy and would like to go to your bedroom to cuddle for a while. Cuddle, caress, french-kiss, let your hands roam to he erogenous zones. Remember as long as she's willing to allow you to stimulate her your making progress. If she does then she'll tell when to stop you're advances or let you continue. It may take a few more dates before she let's you see her paradise. But go with it. And if you have any other gal-pals who don't mind hanging out with you, do in between seeing her again. Hang out and be seen with them. Ladies work on a pecking order and tend to want guys that are in demand. The key here is you don't know if she's a one-time lay or regular sex mate moving toward love. Some men and women need lots of compatible sex before they fall in love with their lover. You may be the guy.

She wanted you, and made an obvious play for you.

You shut her down by turning tail and running off.

Humiliated, she used the "I was drunk" excuse to try and cover her shame over your rejection of her advances.

Since then she is still attracted but no longer confident enough to try and approach you as she figures you will just humiliate her again.

Whether or not any of this was your intention is irrelevant. This sort of thing is why many women don't want to bother with shy men. It ends up too embarrassing for them as they have to really put themselves out there emotionally by behaving in a manner that might get them called a slut by their friends to try to get the shy guy they are attracted to. Then when the guy tucks tail and runs off all red-faced she is left feeling repulsive. After all it is "common knowledge" that a girl can get laid whenever she wants by being very obvious about her desire for sex. So therefore she will figure she has to be exceptionally ugly to not succeed when she does so.

If you actually do want her, you will have to eat some crow and take a risk for her. If you do not put yourself out there and risk humiliation in return she will just think you are making fun of her or playing with her emotions for your own amusement.