“Joe knew that for some, really for most, the derivations of belladonna that blurred their vision and caused their hearts to race would, as well, hasten their forgetting of detail. They would not recall, not readily, any sense of pain or shame or doubt or threat of danger. []There were always children to be used. Members were obliged to offer their children, although not necessarily every child in a family was used. Some were found to be not suited for the rigor. Some were left alone so that if the involved children in a family were to attempt to tell, siblings could not corroborate their experience.”