Ernie nodded at Moody's orders. He knew that Hestia likely wanted to go down and interrogate the Death Eaters who had held her herself, that she wanted to thoroughly inspect the place, but it was too dangerous. Hestia was pregnant and had been cooped up in this damned room for days, and soon Dominic and Hannah would be notified that everything had gone well and they would want to see her.
When she began to protest the orders to go to the Ministry, Ernie put his hand on her arm, pulling her back toward him gently. "Hestia." he said softly. "Dominic's going to find out about the impostor and the fact that you've been kidnapped, and when he does he's going to move heaven and earth to find you wherever you are." Never mind the fact that Hestia and Ernie both knew that Dominic knew of the plan, the fact was that Dominic would come here if that was what it took. "He can't come here." Moody would likely just think that he was talking about the Minister putting himself in danger or getting in the way, but the real fact of the matter was that Dominic and therefore Hestia and Hannah, would all suffer if Dominic Abbott was involved in this at all.