she is trying to eliminate those who caused the war or benefited from it & that father & his organization was part of it so she killed him & took over it
Or, we could went to the most hateful, yet 'intriguing' theory. Serife loves his saintess too much, that he wants her to live in her own way in the 2nd life. Watching, while waiting for his time to steal the Ml's spotlight as the true male lead.
