I don't get it, why would she be in danger? Isn't that the exact kind of image the leaders in the north want to show? A Happy and Productive worker?
The haircut might not be an issue, but the stuff cut in between doesn't always depict the Great North Korea as being Great. The worst would happen to his guide who you can see pop into the room in the mirror. Her job is to make sure he doesn't take pictures they don't have a chance to review.
Also, they're very much against tourists interacting with the people. It also depends on his nationality though.
If you want more examples of what happens to people watch Kimjongilia. It's a truly depressing movie of tales from people that escaped.
One guy got sent to jail for playing a capitalist piano piece, another for saying Kim Jong Il had a lump on his neck, one for placing paper on the ground with the Generals face down, and one poor womans who was a friend of Kim Jong Il's lover.