The Security Woman (spoilers, argument, plot hole)

Wait a damn minute...

To preface, I thought this movie was brilliant. I understand why people have compared it to Haneke and Von Trier's films, but -

SPOILERS

There is a major plot hole that would have destroyed everything this film builds to, in the character of the security woman who services the male of the family and tries to entrance the Elder in this film.

After the savage attack by the father, how could this charade continue? Surely she would have gone to the police and confessed everything - even at the stake of her good name - after such a brutal encounter.

Besides that, are we expected to believe that the father drives into the plant every day after that attack and gives a cheerful hello to this woman, and she back?

Impossible.

Again: this movie is excellent, and the allegory stands firm, but there's a logical disconnect at this plot point that is somewhat impossible. Perhaps I should let it go - and easily, I do - but it's still an element in the film that is ridiculous in its very setup.