Because I believe this woman is of the borderline PD / psychopathic caliber, I believe her threats (though intelligently hidden in wording) are allusions to threats, rather than outright threats, such as "I'm coming after you" her threats are more subvert than overt.
I have not requested she cease communication because I have chosen to ignore her emails, though they do take a toll on my mental state, because I consider her a dangerous individual (which is supported by a long record of her run ins with the law, some involving physical violence and drugs). I guess I am afraid that if I were to respond to her emails, however much they allude to threats, that it will exacerbate her anger towards me and make the matters worse.
I might know a lot about psychology, but very little about law. But let me assure you, this woman is of the psychopathic persuasion. She is remorseless, takes no blame for any of her actions, and has a propensity for violence. She has me quite unnerved.
Do I have a case here for a restraining order? Shall I send you the emails she has sent me, and the few I have responded to in the past?
Sorry about the helter-skelter writing, but I am quite ignorant to the ambit of the law.