Girl Fight... My Friend Ditches Me in Public.?

So my best friend, Lindsey and I love to hang out, but I have one other best friend, Emily and lately they kind of exclude me. Emily also found another girl so she doesnt really hang out with us anymore. Lindsey will act just fine when it is just us, but when there are other people she knows (especially upper clmen) (were in 9th) she totally ignores me like when shes talking to someone and I really have to tell her something she'll just be like "what?!" in like a mean tone... help we got in a fight after... i told her that i didnt really get to hang out with her much and she said I didnt try and I told her she kind of ditched me and then she stormed off. Help! she was supposed to ride home with us after, but she chose to take the bus... this isnt good...