So someone who has been failed by their parents goes to men she trusts, and that excuses them for failing her too? Excuses them for inflicting even more trauma upon her with their judicial process? Excuses them for absolute inaction knowing that they were sending her home to a violent man who was sexually abusing her and her sisters? Excuses them for ignoring her sisters? Excuses them for ignoring the man's own confession? Excuses them for not even having the basic common sense to report this to the police?
Remember that this is a religion where the elders are your first place to go to when in need. That you have an obligation to report 'serious sin' to them. That to 'drag Jehovah's name through the mud' is frowned upon in the extreme and so presents a major obstacle to reporting to the police.
Yes, things should go to the police. That's the point. One failure does not excuse another. It is not good enough to try and shirk the responsibility which is taken on when you become an authority in someone's life.