Friend

I have a best friend and we're a few years apart and the age that we are a few years is alot, I've known her since birth and just recently like in a year or two she's been acting different. We have a fun time together when were alone but when someone her age or a bit older comes around she'll make fun of me and she lies to me in a normal basis and I just sweep it off but whenever I try to do the same in a funny way she'll get all mad and defensive but when were alone she'll be really nice to and stuff it's really confusing what should I do