"You don't have any control over their minds. So if they disobey you, there's nothing you can do." Orpheus was able to approach Celeste and grab her arm hard due to aggravation after Celeste expressed cause for him to look at her harshly as though he didn't like the words coming out of his wife's mouth.
"I am the king of vampires; I have them by the neck and compel them to follow me; you have no idea how dangerous the dilemma is, so don't act like you won't be affected when we are all killed by the lady in the prophecy." Orpheus' voice was tinged with rage, and as he spoke, his grip on Celeste's arm tightened to the point that his nails almost peeled off the woman's arm.