Well I'm not taking of making my suggestion right know. More like later I don't mind the wait only that Chyos could consider my idea or ruling and managing the kingdom from military to politics....I think you are referring to a very old argumentation that MC must be noble or a royal bastard since his mother was assasinated... something that's not done to commoners.
But that was a wild speculation back than and still is.
MC could declare the region of Arenfield independent and shelter the former queen as in her staying in excile in Arenfield.
Sure the old discussion should still hold some value, but with everything going on I can't imagine such a development right now.
This would likely require the development of Parakes (Capitol) and maybe dealing with "the other" King aswell, since it's unlikely he'll stand by while MC takes the crown in a revolution.
Personally I think that far exceeds the capacity of the game... maybe something for a Part 2.