I was watching this movie, and in the movie there was a 12 year old girl and her last name was Saman. They had a neighbour who lived across the street and he killed her. I remember a scene where her soul was running and this goth girl walking down the road feels it.
The whole movie basically just shows her soul looking at what is happeining to her family, and the killer. Oh yeah, the killer keeps her dead body in this box in his basement and looks at that box for a long time. I think her older sister somehow come dowm to the conclusion that the old man is the killer and sneaks in his house when he's out. She finds a book in his room by taking a piece of his hardwood floor out. In the book he had the whole map of their house. She almost gets caught but escapes... I think this should be enough information although I'm sorry if it's not clear enough.

The lonely bones

yougobro is close, it's called The Lovely Bones...
The Lovely Bones (2009) - IMDb (http://www.imdb.com/title/tt0380510/)