The stubborn shade passed from Deimos' expression as Hecate's hand, as gentle as it had been on his new pet's ear, petted across his face. He nuzzled in a fraction the way he always did with any friendly contact and then dropped his head to look down at the cat now hanging against his leg from his dropped arm, watching it as Hecate spoke.
"Oh." he said with something not quite lost but close enough to be mistaken for it in his voice before he just opened his fingers and let the corpse drop to the floor in a dead splat as it fell into the blood. He curled his fingers back up over his hoodie's sleeve cuffs. "I can't do it." he said, more a statement of fact than a frustrated comment but with a sadness about him that suggested he really would have liked to be able to.