what you're watching in real time is what happens when kara zartler needs to be rescued by cannabis. it's hard to watch, but the zartlers want you to see this. the repetitive hitting associated with her severe autism seems to vanish as she inhales the cannabis vapor. >> let's be calm. let's be calm. >> her mind and her body seem to slowly relax and calm. something no other medicine could do for her. >> i didn't tell her physicians until she was 14. i took her medicated to her neurologist and he sat there in awe and said, i'm not going to chart this. this won't go in her chart, but i think if you have this positive of a result, you need to continue with this medicine for her. >> a medicine that keeps kara