Well considering Sheeps seemed pretty convinced that dyachie was a villager, revealed his source, and in an attempt to save dyachie her character, I think his source is reliable.
Then we have this other source that comes back that dyachie was evil, we don't know the source, just that you say it's 100% reliable... okay.
Obviously dyachie was not evil, and well nor was she a villager, but there have been neutrals in previous games. Just saying that someone is lying, the source of the lie, might be a wolf, thats all, suspect who you may. Investigate me.
Anyways,
lynch Phil