Haha, kudos to her! That video reminds me of this comment that I read yesterday on Reddit (they were also discussing the matter of the advantage that BJJ gives you against untrained opponents):

I was a 78kg powerlifter and had my shit pushed in by a 48kg woman during my first class. I could deadlift 3x her weight, but it didn't stop her latching onto my back like a goddamn spider monkey.