My Daughter Has Developed A Problem Snorting Oxycodone / Acetaminophen.

My daughter has developed a problem snorting oxycodone / acetaminophen. In her words:" I've tried several times to stop, but if I do not snort some in each nostril every couple of hours, I begin to have tremendous pain throughout my nostrils and sinuses. This will go on for days until I break down and snort some more. How do I stop?"