One of the things I have always found interesting and marvel at is that a small human being, having existed for such a short period of time, is able to use the fundamental tools of language. If you watch her hand gestures, her timing and pace she actually believes she is communicating yet without the experience of words. She has no discernible word other than 'momma'. Language is hard-wired into our brains and its basis has to be genetic just waiting for nurture to fill the bowl with a proper syntax. Her hand gestures to me indicate that we still have a primal artifact of communication with hand gestures much like we see in chimps and other primates. It would be amazing to understand what images her inner dialogue is forming that she is trying to express and you can note from her eye movement she is trying to understand why they are laughing at her.