My sister has a stalker. He's one of the neighbours, big, very handsome, but unstable, and a military vet. In the past, I'd warned her that he could pose "a problem." Did she listen? Of course not. She gave him her number and he immediately began sending "highly inappropriate" messages to her. She KNOWS I'm still angry with her, but she still called, begging me to have a talk to the guy. Ha!! As if! My response, "Oh hell no.This is SO not my problem. I warned you, now handle it yourself."
But I DID volunteer to call the police if I heard any bloodcurdling screams coming from her window. 😊