Well OP, if you like her, and it seems she likes you, then i would recommend texting her, or maybe just chatting to her on MSN. It will probably be worth seeing if she brings up what happend that night before you do, thats a good test to see if she wants a relationship. If she doesn't, then you should bring it up and get her to talk about how she feels about it. If her feelings are positive, ask her out.
Prior to all that, cool your head. Eat some food, play a video game or something, once youve calmed yourself, talk to her.
Edit: poster above me raises a good point, if she was pissed out of her head, ask her if she remembers what happend last night. If she does, then you can raise the fact you and her pulled.