Sounds like a heavy-duty guilt trip for breaking the law to me, not the herb. Since she is "positive" about the cause of her mental problems, she must be an M.D. or D.O. with a specialty in Psychiatry I presume??
As a past college user (prior to my LEO days), I have first hand knowledge it is not physically addicting (it's also a medical fact), but like abuse of any LEGAL mind affecting substance, it can have adverse effects on studies and behavior.
I stopped in my sophomore year in college "cold turkey" and never had the desire to light up again. Definitely more "reefer madness" propaganda.
The most dangerous two drugs in society are legal.
Sorry to all you folks that think everything should be outlawed, but as an ex LEO veteran, IMO, the WOD is wrong. Pot prohibition has destroyed more lives than pot ever could, even if you believe it is harmful. Funny how we never learn from History. [Prohibition]