Perhaps, the bible knows that incest allegations can never be proven and that this kind of allegation is fraught with potential for false testimony. It does seem strange to me also. Yet I see the allegation being misused and I also see most women who have been abused and always remembered it not wanting to shame their family member or themselves by telling the world. Maybe the way to handle incest is not to tell. There is the example of Noah and Ham which indicates that telling the father's shame is wrong.
Love covers wrongs.
Whether this includes a child, I don't know. My concern is that we don't start believing allegations of vile things which cannot be proven and where we only have one person's testimony, adult or child. This goes against the rule of law and is guaranteed to pervert justice. The courts are messed up enough already without putting more innocent people in prison and then having higher courts overule them for violating due process and using tainted testimony. Please click on my name and on Enemy of the People to see more of my thoughts on the subject of False Memories being created in therapy.