I've been stuck in a rut these last couple of weeks with a deliberating issue. My protag has an extremely close relationship with her older brother due to shared traumatic experiences. Hence why I decided I need to kill him off. The brother is dating a real piece of work, a two-faced girl, who is cruel and malicious behind his back, but sweet and loving to everyone else. She is the cause, though it wasn't entirely what she intended, of his death and isn't shaken up by it in the slightest. I need my protag to murder her. It has to be done. However, I also don't want my protag to become hated by my readers. She still needs to be likeable. This might be a tall order, but the outlook I want most people to have is 'I hated that b***h and am glad she is dead, but she didn't deserve that and murder isn't the answer'. I want them to disapprove of my protag, but not hate her. My question is, then, how can I make the murder-ee this level of despised and hated by the readers? To the point where they are still on the side of my protag when she murders her? Thanks for any help!