<p>Just tell her that you think smoking marijuana is frickin awesome dude!! Then, next time she goes to smoke it, go with her, and since you don’t smoke, right? You can drive her back safely! Ofcourse, my experience has taught me that smoking weed has little to no effect on driving a car. Now mixing it with alcohol or other drugs, yes, dangerous as hell, but it’d be a cold day in hell when somebody convinces me that smoking a bowl alone has any effect on driving a car (except that you probably drive a lot slower than you would sober!!! e.g. Black Sheep)</p>