It was a tough battle in his mind but one sorted out by the fact that Genji wasn't a vigilante nor did he have a need to exact justice. His hand did rest on his smaller sword but it was a casual touch, not a grasp on the hilt hinting at future action. If he knew Reaper's actual identity, the response might be a little different but that much, he was still in the dark on.

"I will stay with her, to provide rear guard and..."

Well, he turned his head over to Elphelt. It was clear to people who even had a single talk with her that she was using a lot of willpower to stave off the aggressive influences.

"...to assist." In hopefully instilling the basic emotional centering techniques on the fly if need be, that is.