
No my point is that throughout the story she has been smart, and laid-back by not over thinking everything like most heroines in mangas do. That's Adele's main draw. I just find it weird that now she chose to overthink her relationship with the Duke over something insignificant as smiling at the ugly maid working with the annoying bitch they both hate. It just doesn't seem smart or logical for her character to be jealous in that situation. She knows he doesn't like them.

I don't think it's the smile or the maid. I think it's the view change. From social point of view ( marriage hunting hussys)He has a pretty high wall up and then he let her in. Now he is smiling around other women. So in the view of the man hunters if they remove her now he is open to women.
So she most likely doesn't want to deal with that headach for the next few decades.
I thought Adele was smart. Why wouldn't she keep her key witnesses under guard? Plus why is she so salty, she knew the Duke was popular before they were engaged hell that was the reason they were engaged to begin with!