I think there is something unique with religion here - it is a higher form of betrayal trauma.
Imagine being abused at home, but having strong faith and turning to prayer for comfort.
Now imagine abuse that comes from "God's servants" - no prayer for comfort, it is a betrayal of faith and belief in God in addition to betrayal of your physical body.
My experience involves kids abused by a high priest in the Mormon faith - abused for years and years and years. Authorities knew about this high priest - it ended his first marriage, and the first wife was blamed. They sealed him in the temple again telling lies to 2nd wife, and this guy was given support groups by untrained volunteers that were supposed to help - if wife just says their prayers, reads their scriptures, goes to the temple, everything should be fine - taught to fogive 70X70 - his work finally turned him in, hard-drives full of child porn - 18 years of videos he made on just one thumb drive. Through these years he served in bishopric, served overseeing children, served as high priest in many capacities while everyone knew about his problems - had faith in their predator support groups - his wife served as relief society president - was considered faithful for enduring well. He is in jail, they are still sealed for all eternity, and she is considered a good and faithful godfearing wife for it. In religious beliefs - you are rewarded for turning the other cheek 70X7, and staying quiet about it.
Not just fail the victims, but blame the victims. It is their fault to not fulfill their duties, and force the priesthood to drastic measures when the priesthood's needs are not taken care of.
I think the boys scouts are handing everything well right now - they have amazing new policies and training, are actually supporting victims, the opposite of most organizations.