Well they wanted a religious answer so they went to the church. I wouldnt go to the church for a scientific one would you? You cant blame the church for one priests suggestion, he was probably guesstimating like pretty much everyone else when they talk about the paranormal. I dont remember the priests being schooled in demonic or ghost like subjects. I personally do not believe in ghosts or ESP, I think the family should have had thier heads checked to let thier kid be taking in by psychics telling her she has ESP, what a load of crap. The best answer in my opinion would have been

A. to move
and
B. to get thier daughter started on psycho therepy.