well cive her at least one slow dance but slow dance with other girls to not make her feel awkard. then do like the group dance where you dance with like 6 of your friends at the same time. Also give her some distance. Sit and talk with your friends for like 10 min then go see her. maybe give her a little time for her and her friends alone too. I will tell you one atleast be with someone the whole time whether it be with her or your friends.
DO NOT stand alone at the side. you will look like and idiot.