Shes being so moody...what should I do?

My friend has recently (around 2 weeks ago) been rolling my eyes at my presence and treating me like utter crap. I know that we may be completely different, I'm extraverted while shes introverted - and i'm more open and friendly while shes more exclusive and secretive, but we're both quite philosophical and love getting into a depth of things together in discussions. I've noticed how she sometimes tries to be like me - and how I've made her alot more confident and open to people. She even admitted a few months ago that if it weren't for me, she wouldn't know around 80% of the people she knows now. She probably wouldn't say so now, she'd deny it all.Sometimes i can tell she is just lying to her own true self by really concealing it and pretending to be the more mature, clever version of me - but I've learnt to get over it; she has the right to do anything she wants. Nowadays, it's really un-nerving for me to hang around her since she doesn't even value my opinions, rolls her eyes at me and acts like i'm stupid. She even muttered to herself i was stupid today. I mean... geez ; i really don't want to start a fight over this for the sake of the others in my group but the issue isn't getting resolved. I have the potential and raw self confidence to stand up for my self, but I just can't find the words for it if she's going to glare at me and call me a dumb bimbo. She is incredibly good at lying, I've learnt over months.I'm not sure, maybe i am just frustrating, annoying and really really immature?

What hurts me the most is that, now she's gained the most benefits out of me eg. contacts, connections, self confidence, jokes, humour - she'll just run off and act like me with all the plus.

What should I do? Thanks guys in advance.