Complex sentence: She discovers that if she does not periodically satisfy her new appetite for brains, she starts turning into a stereotypical zombie, stupid and homicidal, so she takes a job at the King County morgue and eats the brains of the bodies she autopsies.
Split into simpler sentences: She discovers that if she does not periodically satisfy her new appetite for brains, she starts turning into a stereotypical zombie, stupid and homicidal. Instead of feeding by killing innocent people, Liv decides to takes a job at the King County morgue and eat the brains of the corpses she autopsies.