Those extra panels on the side of the panties, mean you're wearing clothing some pieces of which don't even do anything, which clearly signals that you're a slut and trying to signal that on purpose? A Countess-level slut, in this case? The bureaucrat is pretty sure he already explained that part, though. And if he didn't explain it successfully; well, trying to make sure you explained something successfully really crosses the line of what a low-level bureaucrat can get away with around here. And sure, swapping for a thong will save a couple of credits on the privilege-cost.
He sends Opalyn on her way, slightly wishing she was just a Baron-level inmate. She's cute, and this conversation turned him on some. He'd have considered using one of his prison-employee privilege tokens on her if she were cheaper.
Then the next imprisoned submissive noble girl shows up at his window, quivering in distress about how well the monitor judged her to have performed, and how many tokens he'll give her given her past record; and he forgets all about the previous woman.