I wonder if people have tried telling her about her attitude problem?
Yes! They have many times.
I think that like many, she assumes people should accept her no matter how she behaves, and they do. But, this doesn't mean they want her around to ruin the atmosphere.
Ah, well, her saying she has been trying to get into one of the crayfish parties for 20 years is silly then. Clearly she's not trying enough.