That kind of weird storyline, Sharon left Regan and quiet her job after the first one cause she saw Regan go crazy in the possesion, but comes back to take care of her cause she feels at peace with Regan , i guess they trying to make Sharon look like Ellen Burstyn in this one with the short hair and hysterical acting. In the first book it sort of hinted that Sharon was the demons target all along cause Chris mentioned she and Sharon used the board together. Then Sharon kills herself by setting herself on fire at the end of this one.
