In my experience, the people who do the most to make you out to be a monster usually harbour the most crippling guilt because they cannot own how horrible they’ve been towards you.
What has helped me overcome the pain and anger that maltreatment brings about is the sheer insistence to keep showing up as I am, not as their slander suggests.
That’s what I’ve done and will continue to do. The lies can keep coming because me simply showing up as my authentic self will keep blowing them apart.