How can I get rid of her?

I have a friend I talk to in real life, but she acts way too fake and it really annoys me, I’ve told her everything about myself, and she knows all my secrets, I know all of hers too, how can I get rid of her?

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If I beef with her, I could end up in some serious shit, so I don’t wanna start fight with her
How can I get rid of her?
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