Surely that's why such things should be passed to child protection agencies and the police as the default? They're equipped and trained to deal with these cases. The elders are not.
Just for the record and because it needs to be said, false accusations of child abuse by children are very rare. Very rare. In fact, the opposite is true. Children are much more likely to minimise what has happened to them, or even not to disclose at all.
I am a qualified secondary school teacher, and part of my training was that if a child came to me and even hinted that they had been abused that I should take it seriously and pass it to someone more qualified to help the child directly. I also had a responsibility to make sure appropriate agencies were informed. The one thing which is an absolute 'no' is to suggest in any way you fail to believe a child, because if they've found the strength to talk to you about something like this, then it's your responsibility as a sensible adult to make sure that they are safe and get help.