My 2 cents worth is this:
Elders have to get out of their insular box that surrounds them and pursue building a rapport with local law enforcement. Elders who have already meet with different Police Investigating abuse team will have business cards of Detectives they have met and phone numbers to get a hold of them.
So when an abused child or a rape victim goes to the Elders anything said should be stopped by the Elders, and they could say "May I introduce you to "so and so" Detective at Nameless City, he/she is a wonderfully caring person. I DO want to help you through this time of trouble for you / your family, but this is a crime and as such should be taken care of by people in the best position to do this." Elders should be reassuring that everything will be okay and they are here to give the moral and spiritual strength during this time.
This way, there is reporting of a crime (there isn't a clergy/laity privilege because no confession was done by the sinner). Later the Elders can hold a JC if they so choose after the victim's testimony is safely taken down by the police (a copy of the report can be given to the victim who can hand it to the Elders), and after the perp have been given their statement to the police.
There is no need for a confrontation between the victim and the perp.