I just finished Hera's flashback. Nothing justifies Hera's idiotic actions, but her story is tragic.
This shows how cruel this universe that NiiChan created is, Hera had a good character and a lot of willpower to help others, so much so that that was why Emma's mother dedicated her entire life to her, after her husband and son died at the hands of the man she loved, she changes her personality. I think that, in a structural way, Hera is just another victim and part of the system of mafia families and murderous clans, dehumanizing, reducing people to a means to an end, meaningless, incapable of functioning as human beings, as happened with Emma.
The theme of "love and hate", which she soon took for granted in her dialogue with MC, was simply the best way to deal with her pain, was to punish the people "responsible" for her sadness, because it no longer had meaning in her life beyond that.
Something particular had changed, much more than sadness over the death of her husband, and I like the message of this game (intentional or not) that trauma can make you suffer deeply, or be a great force for change.
Maybe I'm just making a pointless analysis, but I still wanted to share this.