inbetween - Here is a link to the official JW media site that has their child abuse policy: http://www.jw-media.org/aboutjw/article23.htm It also mentions what happens if the accused denies it.
"If the accused denies the charge, the two elders may arrange for him and the victim to restate their position in each other’s presence, with elders also there. If during that meeting the accused still denies the charges and there are no others who can substantiate them, the elders cannot take action within the congregation at that time." (2nd paragraph)