Sarah Michelle Gellar from her interview at Suicide Girls:
DRE: Would you be in a sequel to The Grudge?
SMG: I’m not signed for a sequel but I know Sam wants to do one. I want to open the movie first.
DRE: Did you shoot more than one ending?
SMG: We shot endings as well as epilogues in Japan. We shot the film on a very modest budget then a month later I had to go back to Japan for reshoots. That worried me a bit but it turned out they wanted to add backstory for our characters.