
Ok, if it’s really a problem, (1) I would inform the police. Don’t have to go anywhere with it, but just have that out there so that someone in the police department knows. That way if it escalates, they might be more ready to help out. That’s what I did with a crazy person I met. Police followed up to check on me.
(2) Block, and if she calls from other devices that aren’t blocked, change phone numbers to one she doesn’t know. Inform any mutual contacts that they are not to share new contact information with her. If getting away from her is worth the time and effort of changing phone numbers, that’s the best I got.