You have to get them to hate you for them to stop coming back. Some of them will disappear forever. IMO the ones that keep coming back are the most dangerous ones. Thankfully the one I dated is the ghost forever type. Just hearing her name now makes me uneasy. I can only imagine the mind phuk if she were constantly trying to contact me.
BPD's thrive on power, control, attention and chaos. That's their lifeline, without it they will die. They keep contacting you to see if they still have control/power of you. Even if you tell her to F off, she knows a reaction means she's still in control of you. If you ignore her enough she will give up and leave you alone. No contact is and always will be the #1 way to deal with these pos.
I got a Facebook message from mine the other day saying she dreamt i had died and wanting to check i was ok. Block if you can't handle it, me personally I don't care anymore "hey nah im not dead thanks for checking" and carry on with my damn day.
She had a dream you died (probably lied) cause she wants you dead. Why even give her the pleasure of a response after all she did? I know you and some others or over them and can handle grey rocking when they pop up. I do not recommend even saying a word to them. They don't deserve a reaction or response. Always know if they do contact you, it's
NEVER about you, it's all about them!