[Newt shrugs.]

And trying to take the fight to him as opposed to trying to convince everyone to vote for him at a trial probably sounded more, uh, reliable. There was no guarantee he'd be the killer that week, anyway. That, uh, turned out to be a solid play, even if it got her killed... If she'd have waited until the trial, it would've been tough to naturally point at him as a suspect after all that crap Junko pulled.