"No." Castiel's voice sounds exasperated as he tips his head to another side and leans down, shoving most of his forearm inside the incision he's made of the limb, reaching about for that gland he's looking for. "The kaiju are relentless. I am best suited to stay here." He finally looks up at her then, blue eyes sharp. He knows exactly what she's trying to do and he'll have none of it-- as evidenced in how he drags the gland out of the monster with his bare hands shortly after.