The tried and true deployment of flying monkeys (those who abuse by proxy). What I find interesting is everyone immediately believes the narcissist without question. My ex husband is one, as is my mother. They both behave this way, though she is much more skilled and much worse than he. My mother financially and emotionally abused her kids, manipulated loved ones and friends. She planted seeds of misinformation along the way for later smear campaigns. I went no contact with her a while back, for my own peace of mind. I can only imagine what she tells people; strangers, relatives. Whatever it is, I'm sure she's somehow the victim and I'm just the ungrateful brat. Even though she's the one who faked an illness for years and used it to con people out of thousands of dollars to supplement her income. Myself included. When I finally stood up for myself, after she'd already been treating me like garbage for most of my childhood and young adulthood, her treatment worsened.
With flying monkeys, the narc wants you to waste your energy trying to untangle the bullshit. It wasn't worth it for me. If people want to believe her version of events, even when I have proof, more power to them. Their loss. She'll just turn on them eventually, then they'll learn.