"Tsk," Tui tutted. ('You've made my job harder, Guildmaster Bradt.')
Guildmaster Bradt probably thought he was doing a favor to Rui and to himself, and frankly, given that he didn't know that Rui had infiltrated the Voidhunters, it made sense that he thought this way.
However, Rui couldn't even tell him to stop. Because even doing that would reveal that he was involved somehow. That would instantly make the four surviving martial Squires suspicious, two of whom were women.
That would be no different from revealing that he himself was the Voider. Thus his hands were tied in that regard.
('On top of that, Guildmaster Bradt cannot stop Chairman Deacon from placing a bounty on my head,') Rui knew that.