I agree with Lía. You can't really have anything to defend against "[player] is mafia" other than "no I'm not", especially this early during D1.
To be honest, it's nice to actually see some discussion going on in D1 since most of the players are speaking out, rather than just random voting. It was pretty common in where I originally played mafia. Though the blind following of the bandwagon of some persons is kinda suspicious to me.
The thing is, if Newt is the cop, he could either be paranoid or insane cop if Kiet's telling the truth about his role. There's also a possibility that he could be the Lyncher, as Cass found the role in EM and what Alaris said.
I was thinking Kiet could be a Miller, but since he claimed Vanilla then I dunno,,,