You know I have the same problem. I find with high energy groups the best thing is to limit talking, sometimes you have to lean in which goes against the rules of body language. But I've not had massive success, but the only success I've had with such groups is to Isolate your target by dancing with her. Then try to spin her or get her to change direction somehow. Even if this means dancing around her so she has to face away from the group (providing you have her attention). Dancing game is predominantly a superficial being. The best way to dance is to be like 'wallpaper', nothing flashy just doing your normal thing. This means no chanting, flailing arms etc. But the last thing I have tried would be to be quite funny or acting goofy with your dancing then when you get the suprised "what is he doing look?" it gives you an opening to say something like 'I thought you looked as if you knew how to have fun. I must have been mistaken'. 50% of the time the girl will then briefly qualify herself by saying how she does know how to have fun. I normally play off of that.
I appreciate this is by no stretch of the imagination solid game. Just what I've learned through personal experiences. I hope this can be of use man.