Kathleen Hale stalked a reviewer who gave her book 1 star. She defamed her, harassed her and turned up at her house, claiming she was 'catfishing' her.
What she did is not okay. It's never okay, and it wasn't okay for the Guardian to let her brag about it.
Oh, and she also cites Stop The Goodreads Bullies.
Read more on the site.