hey xx
I think that if you've talked to her about it and she still would rather hang out with the other gang then you should really question yourself if she really is worth being your friend. Friends never leave each other they stick withe ach other no matter what. If there ae other people that love you then you should consider yourslef lucky because some people dont have other people so appreciate them and hang out with them because there yout true mates.
If she really is your true mate then she will feel bad and spend more time with you.
xxx gd luck