Man that's easy. First off, invite her to the event. Second, your getting paid and "It's your job" she wouldn't want a dude without a job would she? Ask her if she wants to dance so she doesn't feel left out and assure her it's all about her and she has nothing to worry about. Then explain you are a dj and these wack groupie girls bother you all the time but you pay them no mind. Then when she discovers their numbers in your cell phone, just say because your gonna have them promote for you. When you get home early morning the next day after the gig just explain how you had to wait all night when your done to get paid and then pack up your stuff and then you went to eat and it was crowded and really slow etc. Works like a charm! *wink*