The Wife
She made a mediocre movie, a poor movie.
Utterly insufferable. The guy is in the midst of some kind of mental break, sleeping on his sister's couch, and she can't open her mouth without making it all about her.
"WHAT ABOUT MY NEEDS!?" was a line that summed up that character to a T.
She's living in a palace compared to him, bringing in a Surgeon's salary, while still expecting him to support them with his night watchman's gig? She also demands he clear it through her before accessing the kids, then doesn't answer the phone. If there's no court ordered custody arrangement in place, she has no right to restrict access. If there is, she's likely defying it by refusing him access to the kids.
All that aside, the actress only had one mode, and that was "weepy indignation".
"I know your sister was just brutally murdered, but we liked her too! It isn't easy for us, ya know!" He was her frickin' brother, lady.
Seriously. What a *beep* character, in more than one sense of the word.
She served no purpose in the film other than to be a raging thunderbitch, and it dragged the rest of a reasonably decent ghost movie down.