Spreading information, unfortunately, would have to be deliberate. ; ; He can certainly wreck someone by accident, but little details as that, the speaking thing, don't slip so easy.

That said, the rest is absolutely feasible! Neffa could even just be very unfortunately near by when Initiate slams on his first mask and the fear just blasts him. The Neffa can have lingering paranoia effects and guaranteed nightmares.

:o)