That may as well be, but I think that we can take a small measure of comfort in knowing that this guy has been in the news, his photo has been shown to the public (here, for instance), and his name has been made known.
There is therefore a non-zero chance that, in the future, he may be recognized before something happens.
But she awoke to find him already in the act. It seems to me, her keeping silent is appropriate vengeance, but what if he had gotten away with the act and not been caught?