Matt Hona knew nothing about Maris Brood's death. In fact, only Tang Xiao and Arroyo Barlow knew about it.
After all, regardless of the reason, executing someone who had surrendered to their side without that person having done anything wrong would have an extremely negative impact.
Tang Xiao, who wielded the Death Force, might not have cared personally, but that did not mean he, as the Grand Duke of Dawn, could treat it lightly. So he kept the matter highly confidential and merely explained it to Arroyo Barlow, telling him that Maris Brood was now the only candidate. If they wanted more, they could only hope that the Intelligence Department might kidnap a few Jedi Knights who had slipped through the net.
Just thinking about the odds made it clear how slim they were...
As for Darth Lilim, not long afterward, Darth Malthael took her to Planet Korriban to temper her Dark Side Force. By the time she returned, her heart was already filled with darkness and violence, and she had long forgotten about Maris Brood.
Next, Arroyo Barlow completed his research on Maris Brood. He connected Maris to the drone control system of a Consul-class aircraft carrier and, with the help of Shelak Tribe engineers, designed this Force-based command system.
As far as the Shelak Tribe's Protoss engineers were concerned, the moment they saw the dense Dark Side Force surrounding Maris Brood, they felt neither sympathy nor any desire to dig deeper. They simply treated her as a tool. At most, they would remark, "Who told you to fall to the Dark Side? You got what you deserved."
Make no mistake—if Darth Malthael ever kicked the bucket one day, those Protoss would most likely have the exact same attitude.
In the end, the Consul-class aircraft carrier capable of carrying