"Well, they sure did choose correctly in sending you to the dramatic section. It'd be more amusing if we weren't low on time."
"Listen, to actually fake this, you'd need to figure out what magical signs I'm looking for, and how to fake them, and then correctly guess how much more powerful you should get when you get emotional. It's not likely you can do that. We win this game against much better-informed adversaries, people who've been sorcerers for whole hours."
"You're already at the level where you've got some nice privileges in the Facility compared to the other inmates, and they're not going to take your first time as setting your permanent calibration anyways. Can we just not? Because the next step from here is that I cause you pain, which to be clear would increase someone's output by a whole lot from your last step if they weren't faking. And if you're feeling emotional, maybe I actually do have trouble figuring out when you're nearing your second limit for real, and then that's unpleasant. Go as far as you can without pain, and I won't have to hurt you at all, on your first visit."