At this point we know the instigator acted N1 but not killed N1 and killed N2 but not instigated N2 ..what possible reason is there not to instigate N2 as well.. maybe he's DEAD ? Miki was killed by KILL not mafia NK.. is it possible she was the instigator? we know kill is not blocking so the instigator could have still killed cube and then die himself ?
On another line of thinking - I said that we know he did not kill N1 - but we actually do not KNOW that ..what if he did try but was blocked , mafia NK is blockable , instigation is not... that would make MikeD the possible instigator , since him and cube were blocked N1, he could have instigated and attempted a kill but was blocked...