I would share with them the definition of ritual abuse:
Ritual abuse usually involves repeated abuse over an extended period of time. The physical abuse is severe, sometimes including torture and killing. The sexual abuse is usually painful, sadistic and humiliating, intended as a means of gaining dominance over the victim. The psychological abuse is devastating and involves the use of ritual indoctrination. It includes mind control techniques which convey to the victim a profound terror of the cult members and of evil spirits they believe cult members can command. Both during and after the abuse most victims are in a state of terror mind control and dissociation. (ASCA, 2002).