
Remember when the ML returned then he was pretty hurt the FL wasn't in his fief? All those years when he was at war he was sending his knights to fetch the FL. However, the people in the dukes's house treated them as shits. Like saying the lady is not coming or down right insulting their liege. So they see his wife as a stuck up bitch with no respect to the hero who was cornered to face eminent death.
Oh, there's also a layered meaning why she was not permited to change houses. ٩(๑❛ᴗ❛๑)۶
Their child as a means for controling the ML. (If she got pregnant)

https://www.lightnovelworld.com/novel/under-the-oak-tree
But its not updating anymore. Wordexcerpt gonna make their translations payable and you know, some are rip offs.
i hate those knights fuck them