The wife abducted the money-making machine, that is her son, to her motherland.
It's all profits math: while being engaged to this duke (ms'c father) had diplomatic/intrigue impact, it's all nothing compared to the son, who can make in seconds profits comparable to a half year of taxes the duke...
@boag, that's right! One of the main three girls in previous chapter grabbed his light-saber while the panel backdrop was white. So that's where comes my joking question.
You know, sometimes some are joking about husband being one more child in a family? We can take that joke as a base of this title. Also I get the vibes of british humour.
Very funny and entertaining, thanks for the translation!