Its all a little vague to me at this point. If there is a written contract, even if the legal statute has run out, it is something you could bring up to the elders-if you think it would do a darn bit of good. If you do think they would address this, then do it, but if you're expecting actual results from them, you kinda need to play by their rules-be very clear, be very polite, bring up scriptures whenever necessary to condemn whatever it is that happened. If he is breaking laws NOW, then just tell the local tax board (or whoever) and let them deal with it after that.You did your civic duty.
If your ex isn't going to pursue this against the elder dude, there is no chance that the elders or org will ever effectuate any correction. Men get off from pedophile charges when no one will testify because they are "brothers". So, just don't get your panties in a twist about any of this when it is actually out of your control. Help your ex if she wants it, but recognize the limitations. Report to govt, and then forget it.
Not sure what your relation is to the cong/org now, but if you're persona non grata, then just help the ex in a silent partner kind of way or you will hurt her more than help her.
Its saturday. Do something fun. Forget this stuff for now.