False accusation and blackmail

I was mentally harassed & threatened by a woman who faked being in a relationship with me for 1 year. She accused me of being a cybercriminal as she discovered someone was spreading her personal details on the internet. She FALSELY ACCUSED me & BLACKMAILED me that she'd go to the cops, She accused me not 1, not 2, not 3 but FIVE times!!!! I proved my innocence to her. On the last time, she accused me, I even sent her my browser history that I wasn't using the website on which it was shared that time. I got to know about that website from her(ironically), and I started using that website AFTER she told me that someone was sharing her info. We both were trying to figure out who that person was. But she kept on mentally torturing me & I decided I wouldn't help her figure out who that person was. I still have the browser history of 3 months to prove that I don't visit that site. PLEASE help me. She threatened me that she'd go to the cops even after I proved her that it wasn't me. It's been months since we last spoke, but the thought always haunts me