I do see your point, Horatius. I think it can still be said that if she lied to carry off the fraud for which she was convicted doesn't prove that she is not a psychic from a logical standpoint. It does prove that she told whatever lie was necessary to carry off a fraudulent sale.
My argument up there was not whether she was committing fraud, but rather can you prove that she is not psychic. I do agree that she is committing fraud from a legal standpoint, but in the strictist logical sense (like my existance of god thing above) cannot prove that she is lacks psychic abilities.