Wow, she sounds like someone I wouldn't want to be friends with. Is she typically like this now? Sometimes people change completely after a long time of knowing her. Just call her and tell her that y'all need to talk. Say, "You know, the way you acted at the jazz concert really hurt my feelings." If she doesn't get it, then you should think about finding a new friend. She's not worth your time if that's the case.
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