How can one distance himself from a girl who shows excessive interest, displays signs of hypocrisy, and threatens to harm others, especially since she knows a lot about me, and I will meet her in the future?

It is advisable to deal with the girl kindly, as much as needed, and to try to explain her mistakes gently, reminding her of the warning texts, while not expanding in your interactions with her in a way that harms either your religion or your worldly life. Seek help from Allah Almighty and supplicate to Him.