That is the face of someone hallucinating. I would guess it was brought on by the combination of the overhead lights and balloons. I think there is a good chance Hillary has early symptoms of Lewey Body Dementia. It’s all there, unsteady and shuffling gait, confusion, sound sensitivity, distortion of images brought on by light, and hallucinations.
I never noticed her Marty Feldmen eyes
Way back in the 60’s, when I was in college, on the first day of the semester my English teacher suffered an epileptic seizure, she acted just like that, exactly.