Complex sentence: Suddenly, Miyuki and Vanessa appear on either side of Allison as ghosts and Ms. Dale becomes a ghost and makes a loud moaning noise, realizing that Ms. Dale has also been killed by Kayako, and she flees the office.
Split into simpler sentences: Suddenly, Miyuki and Vanessa appear on either side of Allison as ghosts and Ms. Dale becomes a ghost and makes a loud moaning noise. Realizing that Ms. Dale has also been killed by Kayako, Allsion flees the office.