In summary, I think the mafia team consists of two from: Nefela/Macca/Goomer, and one from: ToX/Master.

I'm still confused about this post.

Did Krabby expect to remain peaceful on day three and continue to target me? I'm rereading the days – Krabby has been attacking me since day one, meaning he was mentally prepared to play against me.

Based on the execution on day two, nothing is clear at that point. It was quite possible that either Nefela or NNV would be executed.

Was Krabby trying to frame Master by putting him in opposition to me? Or was he simply naming two innocent players who are not on his team, confusing the town?