The additional information confirmed Gallus' suspicions. Dar-tzesa has a son that needed help and Vile may have exploited that to use her.

Gallus bit the inside of his cheek and glanced away, but he didn't give up. He spoke to Dar-tzesa in a more level voice. "You can think that, but you don't know that it's true. You have a choice, Dar-tzesa. Either you say nothing and guarantee that your son will not be helped, or you tell me now and create a chance that he can." Gallus angled his head forward, looking into her eyes, "Your life is over, but not his. Not yet. Do this one last thing for his sake."

Gallus waited patiently for Dar-tzesa to answer, but his face had a sternness to it that was doing less to hide emotion than before.