The Kingdom that has never heard of half-bloods, nor has it ever been mentioned or discussed before in the manga, suddenly two babies that are half-blood are born, a demon has a half-blood sister out of nowhere?
Well, the queen seem to point the goverment doesn't have a way of knowing 'bout half-bloods cause they either hide well, or get persecuted so hard, they either flee fast or get killed.
The current headache seem to believe if she proves she's strong, the demons won't bother her and her sis. She seems desperate, but the fact she at least think this has a chance of succiding, would imply further that the half's situation in human lands is most probably really bad, if that gambit is preferable. Also, was there anywhere said that the scythe demon girl is a fullblooded demon? I assumed she's just the stronger one of two halfs, and so feels responsible.
Heh, but it seems like her impression of the world 'bout to turn upside down as MC will most probably be
kidnappin taking her into custody welcomin' her to his abode, even if the lady knight might protest leaving a demon alive, and to a third party at that.
Damn, I would love to see the queen explainin' to her aide:
"So. In the demon-human conflict, The Wolves of Justice[TM] are actually a separate, neutral faction."
"That sounds [minding her words towards queen's friends] ...idealistic. But hardly a viable option."
"In terms of pure battle power, they are stronger than the first two factions..."
"R.. Really? Then negotiating with them might not be a waste of time..."
"...combined."
"... what?"