The cruelty... If someone normal sees this one, they would think that Ellena should seek help from experts to fix her problem. Nonetheless, this isn't something to be scared of.
I want Ellena to survive in this world to do my purpose. However, it doesn't mean that I want her to succumb to evil. This is necessary as she also knew it.
I didn't suggest this to her. She did it on her own accord. I think she knew that killing him would be appropriate than letting him live.
It is not just because the bastard can request to authorities and try to twist the fact. Who knows how his group moves. Maybe they are also significant symbols in the underworld.
And if someone wants Ellena dead, we can just deal with it when it's in front of us. We don't have any clue in the first place so being bothered is just the same as being afraid of ghosts.
I could only sigh in relief that Ellena is trying to be practical. Pity is not everything for her morals.