If "girl A" betrayed the Spiritualists at the wrong time all of his country would be doomed. If she is a powerful ally she could be the edge needed to save his country. He probably views a few casualties as acceptable given the stakes. Cold blooded, but not necessarily wrong....
Like you can force someone to defend others while putting their own life in danger lol....They're spiritualists not your dad..they will help only if they want to...stop being an entitled ass
Wonder if Yayoi can use the spirit extracting method the whacky uncle taught her to save Eiko a dozen chapters ago to extract the replaced and place them into dolls