Help

So I went to the mall with 5 of my friends(one being my crush) and I realized she's closer with some of the other people rather than me(which honestly makes sense cuz they've known each other longer, but still)...I think it's cuz I'm VERY awkward around her and have nothing to talk about. I feel like my go to is school and stuff...any ideas that might be interesting so I can keep her more engaged?