Vidiot, IMHO encouraging them to come forward tothe elders would be a CYA move. The elders could then infer , but of course not use the words, to let Jehovah take care of it, to "heal yourself" by forgiveness and going forward with your life instead of reporting to the authotities and all the life /time/emotional difficulties that go along with that. It IS hard emotionally to procecute, but that is not the objective here as we know. To convince the victim, and the victims family, to let the elders and the WT handle the problems and "punish" the offender accordingly would reduce the chances of those higher numbers coming out to the authorities.
Of course, they will have some people who will go to the authroities, and then the WT can say "look, see that we have been doing this". But many victims/families will get the strong inferring that it is 'more spiritual and trusting" to allow the elders and the orgainzation/Jehovah take care of it.