Her greatest fear is to lose control of her own mind. Insanity, hallucination, dementia, brainwashing, schizophrenia - any and all form of identity confusion and executive dysfunction fill her with terror and loathing.

"Hey," she says, as he divines this, "I was made that way. I am the principle of thought in action, and a whole cloud of - what was that?"

She frowns, and her teeth click shut, looking around the stage as if hunting for some exterior force of danger.