"Huh." Aya shrugs, bites one of her steamed buns thoughtfully, then remarks, "Your - unwarning - about him has proven good so far, but I find myself wondering how you knew to make it." Maybe he's confided to Berete that he prefers men? Maybe there have been others like her, spirited away to this or that other destination for this or that reason? Maybe he just demonstrates enough general concern for the welfare of slaves; Aya would buy that.