I'm sorry you have to go through it. That's the number one I like to avoid these toxic relationships nowadays. If she tried to blackmail you online using text messages or social media, there are a lot of platforms that could help you to stop it. My best friend was in the same situation as you; she used
[Only Registered Users Can See LinksClick Here To Register] to get rid of her ex. You must complete several points there, like your name and contact info, and describe in detail how she is blackmailing you. I am sure that will be enough for her to stop.