in my opinion, I think N being separated from uzi in a cave in in mass destruction is punishment enough because he lied to her. what do you think?
Hm, if think about it a brief moment - yes, it was a kind of punishment to him. Because N didn't tell Uzi that humans on Earth is dead, that the final destination is high risk "dead end" for them (although it's ironic)... and maybe Uzi would lost herself to Absolute Solver in the end. But, on the other hand - how did he would know that "Tessa" - is Cyn in skin of Tessa? The one, who is responsible to this madness? Maybe N's warm feelings to real Tessa (as the human that treated him and other drones nicely) made him unaware that... something off, so he belived her G-G
But despite this - yeah, it was punishment for him. Fortunaly, the life gave him one more chance to fix it (as bring Uzi's sanity, and as fight against the Solver in the final) :>