Need help with girl trouble!!!!!!!!!!!!?

Im in middle school and they have these dances,theres a girl who im pritty shure is shooting me glances while smiling ,does she like me?and i cant contact her bec i dont no where she lives and i am homeschooled. plz help. my bro dates her big sis so if she rejects me not only the whole school will know but my family will know.and that makes me a little chicken.plz help!!!!