Mako could barely sleep after the events that took place last night. He continuously tossed and turned as he tried to make sense of it all.
Why was Nathan doing this? What had happened in his past that he is so hostile towards his own teammates? How was he able to notice Mako accessing the system as it is quite subtle and hard to track?
Mako was hoping that his revealing his rage mode would quench Nathan's thirst as it was a skill that Mako had little control over once it was activated and as soon as he canceled the skill, even though he was genuinely concerned about Nathan's safety he acted overly nice to sell the idea that he was preventing this skill from taking over and that was why he was pausing during fights.
It was a longshot given Nathan's cunning personality but this was the only idea that Mako could come on the fly, or at least one that Nathan would listen to.