"Hey, hey, Feon...or Will, calm down will you?! We should take this man alive and interrogate him, don't try to kill him just yet if anything! Otherwise it'll be problematic if we flat out kill him ourselves. We could just let the villagers take him in too so that he can deal with all the damages caused by his idiotic use of the weapon. He isn't even worth the kill..."
Pholus was still on the rooftop to stay safe away from the swarm of roots on the ground level...but he was trying to prevent his acquaintance from murdering someone and soiling those hands of hers. After all, he had a strange suspicion that Feon hasn't really killed anyone before and the Willow side of hers will be sure to take the first kill from her. The two minds should both agree on it and he wasn't willing to let Will do whatever she wanted with Feon's consent.
"Does Feon agree to this?! Otherwise, don't do it!"