Narcissist-And Dad knows, and our sister knows, but they are enablers. Most important of all, Mom now knows. How do you feel about that my narcissistic/borderline personality disorder sister? Hell yes I'm pissed at all you've done and how no one speaks up... except for Mom... Mom spoke up before she passed.
A narcissist will have no qualms whatsoever in assassinating your character. It is an intentional attempt to influence and cause others to develop an extremely negative opinion of you. They manipulate facts, slander and spread rumors in order to paint an untrue picture of their target opening the target up for unwarranted and excessive criticism. Otherwise known as 'The Smear Campaign.'