Tiaral

Bomb is just a shrapnel-explosive blast, mostly, while fire is a specific incineration. Unless Revan clarifies that "normal injuries" for dolls include a fireball, then it's fine. But logic suggests that's unlikely.
And he could have summoned a mob or even tried to control someone a long time ago. And disposing of Sharon's body by eating it is amusing, but not at all necessary. And the mob might not be suitable for that function after all the struggles. It's enough to simply cut off or crush the face/burn it/disfigure the corpse in some other way to the point of being unrecognizable. And if he lacks imagination, he can just take it with him.