I watched it a ton too! At first, I wondered how she didn't break her neck. But, her head doesn't even touch the mat. She learned one thing very well, don't let go! When you realize she's not hurt at all, it's actually pretty funny.
This is what happens when you don't get your ass below your knees. The weight transfer is all wrong and she cannot get under the weight so it rolls forward due to shoulder impingement.
Even this gigantic dude can get his ass below the knees while snatching almost 400lbs.