"The Miller family alone may not be able to completely quell Duke Dressrosa's anger.
Especially the Modiwen family—Vera died in the Half-Elf Palace, so they must bear some responsibility.
If I were Duke Dressrosa, I would use this opportunity to abolish the royal status of the Modiwen family and replace them with a Half-Elf noble to rule Silvermoon City.
This new royal family, lacking prestige, would have no choice but to rely on the Dressrosa family to control the Half-Elf Kingdom, rather than trying to please both the East and the North, like the Modiwen family does.
To avoid this fate, the Modiwen family must find a way to save themselves.
Their best option is to show Duke Dressrosa their loyalty—by breaking ties with the Pros family.
By doing so, Duke Dressrosa wouldn't need to find a new puppet to rule the Half-Elf Kingdom on his behalf."