ITA about the lack of an emotional center. It it all *so* foreign to her. That is actually the only time I have observed her actually struggling; trying to emote, mimicking feelings and emotions, crying for anyone other than herself. IMO she is absolutely soulless, staring out at the humans with those big, dark, evil, cold, dead, empty shark eyes.
As a person with PTSD for many years there are so many seemingly benign types of stimuli that can take me from being a seemingly happy, normal, functioning person in an ordinary situation and turn me into a running, panic-stricken, paranoid, hyperventilating, sobbing wreck in a public place it is ridiculous, frightening and impossible to explain or understand for most people. Some of the obvious, certain colognes, just a few notes or words from certain songs or music, (even Muzak versions) news video clips of certain events or certain cities, the sound of a close helicopter, anything at all related to Pink Floyd, including anyone wearing a Tshirt or seeing an ad, guacamole, raw meat, platinum, the smell of diesel fuel, and a hundred other seemingly random things.
IMO, if she had any degree of PTSD she would be begging for some type of relief.