mental abuse from the duke (there is also physical abuse as we've seen his form of "discipline" *aka a punch/slap to the face behind the public's eye*. Again, everyone the duke isn't COMPLETELY evil. He ISN'T antagonistic TOWARDS Shuli (plus, it helps she looks like his first love the former empress but again, compared to the cardinal, he isn't lusting or attracted towards her. Just has a soft spot) but to Nora (let me repeat: the flashback on Nora's memory is basically CP broke something, made Nora the scapegoat, Duke favoring CP BECAUSE he's the son of his first love, as for his wife, she's just too weak to fight/argue back that's why Nora hates his mom (that is until Shuli will intervene in the future)