The wife did nothing after talking to Neil
the wife went to seek help, found someone that confirmed that what her husband had was real and that he needed to help the ghost and not make it angry. And not only she didn't tell him about it but tried to prevent him for doing it too when he was digging. Not even when she found out that he knew her grandma died before her brother tells her which confirmed once again his supernatural powers.
I mean not only it made the whole Neil thing pointless because of it (other than telling the viewer the ghost intentions) but also she kind of was in the "middle" of the movie without really helping anyone and mostly as a nuisance.
I mean what's weird about the movie is that she kind of did... nothing after all those scenes and all that trouble. It feels as if was "filler" or something. I'm surprised because up until that point she was very supportive about his condition and was more likeable than Kevin Bacon, so I expected her to be more "useful" with this information. A sudden change of personality there at the end.
Nice ass and nipples though :)