Farrel is a probation officer based in the Florida Keys. She is the P.O of Willa Monday. In the episode "Eye of the Storm," it is revealed that Farrel became a P.O because of her own probation officer, and that she also has had a history of delinquency. She attacked a man who was hurting her in her youth while he was asleep.
She does not approve of Timo Proud or the gypsies.