What do I do about this girl?

ok, first do you think that she likes you?? maybe you don't know ,here what you should do call her for maybe couples of time if she replies thats a good thing ask her whether she had fun? tell her that you wasn't at ease because of that group thing but that the only good thing is her being there, and that you'd like to go out alone with her and say whatever you want ..IF! she doesn't reply call her no more if she wants to go out with be SURE that she gonna call you otherwise iam sorry to tell that u'll have to forget about her.sorry !!..but be Optimistic she gonna reply ( i wish ) .. good luck & be strong