In the classic film The Exorcist (1973), when exactly did Reagan become possessed by the demon? What event triggered the possession, and what was the demon's motivation for possessing her?
Was it the Ouiga board? Was it something Reagan did to deserve possession?
I recall from the movie that the demon (while in Reagan's body) asks Reagan's mother Chris,
Do you know what she did? Your cunting daughter?
Later in the movie, Chris tells another character that Reagan killed Mr. Dennings.
Maybe Reagan was possessed because she committed murder, although now that I recall, Reagan killed Mr. Dennings after she became possessed. So when and why did the demon possess her?