By the time Keltham is back, the Silent Proctor is done with her results, and tells Keltham the tally of earnings. Keltham gives that amount to Paxti plus two coppers for her own. (It seems low to him, but you cannot give people friendly bonuses in a bidding situation; they'll learn that, and then adjust their bids, in which case you've added unpleasant volatility and zero income for them!)
The results that Paxti tells Keltham: Two Defected, Six Cooperated.
Okay, that's better than zero Defections in terms of how well anybody really understood or followed the instructions... he didn't want to call Pilar on it because (a) he was not in all rooms simultaneously and didn't want to introduce asymmetries by his own presence in the learning experience, (b) it was obvious she didn't think she was cheating, and (c) everybody comes up with some silly invalid reason to Cooperate the first time, that's part of the learning experience...
Actually. On reflection, Keltham is plausibly looking more at his own illusion-of-transparency failure to explicitly specify what dath ilani children would already implicitly know. For example, that "only try to get as many coppers as possible" in the context of talking about purely selfish agents implicitly includes "you don't care enough about the Law or Asmodean compacts in your utilityfunction that you could use that as an easy public commitment mechanism". Pilar may have legit just not understood that part. Keltham is not on reflection sure that he said out loud anything a reasonable Golarionite could use to work that out, given lack of background context.
Anyways, Keltham calls back the class to hear the results.