I read that Virginia Andrews had to
'spice' up her original manuscript.
Now, whether she had the main shocker plot line all the time, I don't know.
Either way, I think that what she wrote about is not unusual at all, it just isn't talked about.
Also when she wrote the story, even parent-child incest was barely talked about.
I find it funny how easily shocked people are by her stories.
I think the first film was a total let down and quite embarrassing.
This version did its best to show how twisted things got BECAUSE of the circumstances the characters were in.
Sure , if all the details were kept in , it would have been a real treat for the fans..but there you go...better get back to the books :)