After being badly upset by the behaviour of a couple of witnesses I spoke to an elder's wife and she replied "the fact they are Jehovah's Witnesses means Jehovah sees something worth saving in them so we should too".
This makes my blood boil! So a pedo is worth saving, but a victim/survivor who's life/head is screwed up by them is not and should be shunned?
And to answer the original question, it can take years and years for someone to come forward, it could be because they were too frightened, too ashamed, not mentally ready to face it, any number of reasons. The authorities view it the same whether the survivor suffered yesterday or years ago.