How do I get this girl to talk to me again (please answer)?

A few weeks ago I went out with one of my friends for her birthday (we went out clubbing with a few of her friends). Anyway, towards the end of the night all her friends left with their bfs (well, I think one of them left with some random guy). So it was just me and my friend at the club. Then 2 guys started chatting my friend up and buying her lots of booze. I was talking to some girl when I saw this, and I suspected what they were planning (figured they were trying to get her wasted so they can take advantage of her). So I go to her and one of the guys stops me and tells me that she's going home with them (she has a boyfriend so that wasn't gonna happen). So I just ignore the guy, walk up to my friend, throw my arm around her and take her to the dance floor. We dance for a bit, get another drink and go back to the dance floor. Idk, it must of been the booze because soon we're grinding up against each other and getting pretty ual (not that there's anything wrong with that). Eventually one of the bouncers comes up to me and tells me that my "gf" is too drunk and has to leave. I say ok, we leave and she can't stand up on her own (she's holding onto me pretty tightly). I know she can't get home on her own so I cab with her to her house (I was hoping she'd let me stay there). When we get there I'm paying the fare ($100 since I had to pay $50 because she threw up in the cab) and she gets out and pes out in a snowbank. I get out, carry her to her house and she wakes up enough to tell me I can't stay because her parents are really strict. So I had to wait for the buses to start running again, which would have been a couple hours if it wasn't for the cop that gave me a ride home (I live on the other side of the city from her). I guess I got mad at her because I sent her a message asking for my money back (I sent her a message in the morning apologizing though). She tried to call me the next day but I didn't want to talk so I told her this and ignored her calls (she tried calling me twice in a 10 min period). Now I've tried to call her the last week and a half but she seems to be ignoring me. I got through to her once and she just told me she'd call me back, but I haven't heard from her in a week. What should I do? And sorry it's so long.