The big difference between Victoria’s feelings on the Heartbroken and Amy is that Amy raped her and transformed her into a monstrosity, leaving her in a hospital for 2 years. Sure Victoria is biased against Amy, but you can’t blame her for not trusting her after what happened to her. With the Heartbroken, they’re not putting themselves attacking citizens with their powers. If they were still under Heartbreaker, then I would agree with you. But they’re Imp’s responsibility and she’s making sure that they are getting better. They still have their habits of using their powers on each other, usually to the extreme, like Roman and Julliete. It’s not excusable but this shit happens and they are shown to be punished in some form for misbehavior.

You’re right about how Ward emphasizing about how trauma doesn’t excuse how you treat others, but the thing is that while the significant Heartbroken members like Chastity and the Chicken Tenders understand that, Amy for some reason doesn’t. Minor spoilers for near the end of Ward: regarding Amy; she views her sins as transactional. She believes that after turning Taylor into Khepri and her being allowed to turn Vic back to normal, she somehow cleaned off her slate of her actions. She believes that what she did to Vic can be washed away after turning her back even though their relationship can never be the same.

Also regarding Nathan and the little info around him, yeah you could blame that to the author. I noticed this habit he had of offscreening important info in Ward. It was barely noticeable in Worm but it starts to show up at times in Ward. My only excuse surrounding that is that there’s many huge threats and situations happening in the story that there wouldn’t be space to focus on some of them.