Why is she jealous?

There’s this girl in my Spanish class and she’s pretty envious of me. Then she said she doesn’t like enough girls at school to have a birthday party. Which is beside the point but her mom drives expensive ass cars. I know I’m pretty Im pretty enough to be tiktok famous ( I don’t mean to be cocky about this) and she knows that. I rarely talk to her and every time I do she gets an attitude and rolls her eyes.
Why is she jealous?
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