That is a decent solution he came up with but i still wanted him to have her wait at least a week before banging her as punishment. She did still kill a lot of people with her diluted cult thinking so she doesn't deserve the D relief .....yet lol.
I want to say she could be extremely valuable with just how freaking stronk she is but we all know the next threat is just gonna kick her teeth in to show how much of a bigger threat they are.
国母 means "empress" and 臣民 means "subjects". It has nothing to do with mothers, daughters, etc. If one doesn't want to be so literal, then one can translate 国母様 as "her majesty".