The U.S. Supreme Court has turned down an appeal from a Texas teenager who got in trouble for illegal downloading of music—a potential blow to students who might claim to be “innocent infringers” of copyright laws after downloading music without paying and bogging down campus networks.

Whitney Harper of Texas acknowledged she used file-sharing programs to download and share three dozen songs, claiming she didn’t know the program she used was taking songs from the internet illegally.

She also said the money she owes the recording industry should be reduced because, as a 16-year-old, she didn’t know that what she did amounted to copyright infringement.