Nobody can 'see' that she wasn't abused...a fairy tale. Even kids who look like it's possible are ignored, even in this day and age - SO, I wouldn't be as hard on the parents for not knowing, because the doctors people end up going to for help don't know everything, so diseases and conditions get missed, depending on the doctor(s) you take your kid to.
All of it is true (people getting accused of stuff they didn't do). It's a sad story. And I did see the movie a long time ago.