yikes!
To all intents, she’s nothing more than a meat puppet most of the time and not coherent much of the rest. Sounds as if they, Huma plus?, are juicing her up to just walk about.
That head bob was by no means intentional and the non-sequiter “have you tried the cold chai latte?...” follow up, straight out of left field, followed again by inappropriate laughter. Which matches her response after the Reset Button gaffe, well before her slip and fall.