I must have missed a bunch of episodes again, because excuse me? since when did the kiddies care about Miss Priss or her general health and welfare? Last time I checked Jamison was looking at her like she was a walking two-dollar Bible-toting bill and Nora has never displayed anything remotely approaching affection toward Charity.
In addition to muddled thought processes, we also have the fluctuating powers of Barnabas. All he could (or would) do to Carl was kill him (after terrorizing him), but he can hypnotize Nora 1-2-3.
It's pretty amazing how generally acceptable and knowledgable everyone seems to be about vampires in 1897. In 1967, nobody could even accept the concept, let alone figure out how to kill a vampire. In 1897, everyone's an expert.