I'm actually certain because they slipped up with the timing of things in their real life giving them away but I understand not everyone is privy to that level of information.

And honestly, another thing Akihiko, the most concrete reasoning you've given for suspecting Elizabeth is that she seems scummy to you. Sure, if it's actually just a gut feeling you're going with then fair enough but you're awfully obsessed with that notion despite some better arguments to be made against others. Either you're mafia or you're fishing. Either way I don't buy your complete lack of reasoning against her.