I'm definitely in the "Some higher power is affecting people" camp. Because through out the story, people are being too quick in accepting that Karina is a bad guy and Aurora is a good guy.
I can understand if some of them were pretending because lese majeste or something, but there's no way...
Those kinds of people tend to be either be trolls or really self-entitled. The former can be tolerated because they just want to be annoying. The latter have such a narrowed view of the world that they consider any form of betrayal to be unjustified. Even if said betrayer has a gun pointed to...
Gotta love how out of everything she has done and considers not being her fault, this is the one thing she finally admits fault to. Of course, if she denies it, she'd have to be more delusional than someone drugged to hell and back.
Tbf, they need info, so keeping one alive is necessary, as Nito said. The issue was that Nito just wanted to torture them to death, not bothering with getting info. Not to mention, if he really is trying to do the right thing, then a swift kill would be the morally right thing to do. Not torture...