Yes you are. Read the article. She didn't distribute anything, the school and district attorney distributed the photos to far more people than she did. Using your logic, they should be in jail, not her.
If she had been 5 years old would it have been ok? what if the photos had shown her in sex acts with herself? if the boyfriend and her had broken up could he have posted the photos online?
using your logic child pornography can never be prosecuted because the prosecutor, police, judge and jury would never be able to view the photos.