I think teaching children to 'tell' is the only way you can combat child abuse.
If a child already knows that something that's happening to them is wrong, then they can say 'No', but it won't always do any good, unfortunately.
If they know that they can tell and that they will be listened to, whatever threats have been handed out, then they will have some hope of stopping it.
Nadine Dorries' emphasis on 'girls saying "No"' and her insistence that kids as young as seven are being taught to put condoms on bananas, is a good example of the scare stories put out there by the moral 'majority'. The fact that places like Holland, who have a much more open sexual education programme, have a better record on teenage pregnancy and sexual health, seems to be completely ignored by the likes of Dorries.
Linking her campaign with sexual abuse is grasping at straws, IMO.