Complex sentence: Deciding that she has had enough, Donna flees with Denny to a nearby local shelter, but Dennis picks her up there and threatens to kill her, priding that he will get away with murder.
Split into simpler sentences: Deciding that she has had enough, Donna flees with Denny to a nearby local shelter. Dennis, however, picks her up there and threatens to kill her, priding that he will get away with murder.