You will find that a lot of children that have gone through this sickening kind of situation don't report for 2 reasons...
1. They don't know any different than the world of abuse they live in
2. Would you believe they hold an overbiding love for their parents
Alot of these children go on to develop deep psychological problems and sometimes the cycle with their own children starts all over again. It's a case of breaking that cycle.. it really is disturbing to be confronted by horrendous situations like those mentioned