Why did Alice get away from the tea-party?

Alice left the tea-party because the Hatter was rude.

This piece of rudeness was more than Alice could bear: she got up in great disgust, and walked off; the Dormouse fell asleep instantly, and neither of the others took the least notice of her going, though she looked back once or twice, half hoping that they would call after her: the last time she saw them, they were trying to put the Dormouse into the teapot.
`At any rate I’ll never go THERE again!’ said Alice as she picked her way through the wood. `It’s the stupidest tea-party I ever was at in all my life!’