There's tons of free porn on the internet. If your problem is how the secretary was discovered, I think you're missing the point. I mean, it's like saying if you're speeding and you come across someone fleeing a murder, you shouldn't be allowed to report it, because had you been driving the speed limit you might not have seen anything.
I don't think the problem is what she did, so much as that she left a visual record that children could see. If she had been a stripper in a club, no child would have seen her, so no problem. If she had a gang bang with 14 guys in the privacy of her own home, no child would have seen her (assuming she got a babysitter), so no problem.
A lot of you are saying "what she does in her private life is nobody's business." Guess what? The porn video she made is not private. It's anyone's business.