Do what losingit suggests. Proper authorities are the only ones who can bring justice to the perps.
Also, find a way to tell your husband about this to protect your children. If you can't find a covert way of doing it (providing copies to him, etc.), then just come clean. Snooping is a MUCH lesser misdeed than participating in the cover up! "Look, I did something I shouldn't have done. But the fact is, I did it, and now I have a moral responsibility to do something about what I discovered, and that means protecting my kids."
Holy cow. What would y'all have this poster do? Be in a family therapy session with her children a few years from now, giving excuses about why she allowed them to be around a known molester?
I get it. "Leaking confidential info" is an ethical conundrum, but I view it as a justified wartime tactic. The only way this cult is going to stop abusing children is by the spotlight being shined upon its dark corners.