<human>: Can you succinctly summarize the text in 1-3 sentences?

Hey everybody. So I've been seeing this girl for a little while. We haven't been dating for long, but I really like her. I honestly haven't felt a connection with a girl right off the bat as much as I have with her. So tonight she went to a party, and got really drunk. I got a text from her freaking out, and eventually when she calmed down, she said that she had sex with somebody. I called her and she was bawling and inconsolable, saying that she would never do anything to hurt me, and that she really cares about me. She says that the guy forced himself onto her, even though she kept telling him that she has a boyfriend. I talked to her friend who was also involved, and she said that the guys involved forced them into doing it while the two of them were sitting upstairs chatting. (she was involved too, and another guy did the same thing to her). 

I honestly don't know what to do about the situation. Her friend said I was being a dick by asking about what happened, and that I was making her upset. It's a touchy subject, because I didn't know when I was first talking to her whether she did it willingly, though I dont believe that she did it willingly now. I told her to call the police (which she likely isn't going to do), and I tried to console her. I just have no idea how to handle this situation, or what I should do. What would you do if you were put into this situation? I really care about her.
<bot>: Girlfriend was taken advantage of at a party. Really upset. What the hell do I do and how do I handle this situation.