It's probably not real. Such titles often are used to attract attention and are not grounded in reality. Maybe it's a fictional tale with elements added for entertainment value.
I don't think it's real. It sounds more like a fictional story or maybe a made-up legend.
Most likely not. 'Amish Witches: The True Story of Holmes County' seems to be more in the realm of fantasy or creative imagination rather than based on actual facts.