I need help with a friend problem!?

ok so me and my best friend have been friends since kindergarten and all the way till 6th grade now im in 7th well now 8th and i am a country girl and shes holster kinda girl. and i switched schools in 6th and she got other friends and now there very very close! i made a few friends but nobody super close. i don't have a problem with her having other friends. But she wont invite me over any more she wont ask me to do things i have Always been there for her even when her parents were going through bad times... and she never seems to want to be a my friend! Like for an ex sample we were in the mall one time, and i had on boots and i t-shirt. She had on a all her fancy clothes and was all dressed up to see a movie! and we walked down there and one of her friends was down there. I started to go get popcorn for us and she stopped me and said "i don't want you around them" i was like" why not". then she got all mad and started say how i embarrass her and that we need to leave i was like whatever! i haveAlwayss been a good friend and nice to everyone. because everybody needs a chane! but i have never been able to have that one friend that everyone else has! is there something wrong with me? im a country girl and is there something wrong withthatt? so my Q is did i do somethingWrong or am i just weired!