ToX
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Well, in that case, if I were the Mafia, I would prefer to get rid of Ataraxia as soon as possible.
But this decision would depend heavily on whether the clue in the topic was correctly deciphered. If Nefela, Crabby, and, okay, I are the Mafia, then perhaps the Mafia team wouldn't care about eliminating the Serial Killer.
Just realistically, what would the Mafia team do with Ataraxia? Spending a block on her is pointless. Killing her with the first Warrior with ignore healing? Well, yes, but that kill could be directed at a useful Town member. Using the first Warrior's ultimate ability is useless, as the redirection will only redirect the attack.
Ignore her and leave her alive? Then there is a real chance of getting a kill directed at your own team. And even if not, the Serial Killer will have protection from execution and assassination. Does the Mafia need that? Not really, I think.
