I remember a scene where a teenage girl kept sleepwalking at night due to having bad dreams of the scary movies she watched. Another scene I remember was she wished for a girl to stay quiet & the killer cut her tongue (during day time). I also remember the ending when the protagonist wished the killer was dead, so it kept scratching his face til there was blood on him. The next scene was when the protagonist’s little sister watched the same horror movie and the killer was watching her from a window.
The Wisher (2002) – http://www.imdb.com/title/tt0354216/