Well, Isabella, regular Joes (and Janes) don't dream about murders -- a little bit at a time until they put all the pieces together and aid law enforcement in solving crimes. If that's not odd and fascinating, I don't know what is.
Like you, I read an article about Allison Dubois. I don't doubt that she has "powers" most of us lack.
On a somewhat related note, my great-grandmother was known by many New Orleanians during her lifetime as "healer". Holy Water, candles, statues, and all that stuff...