I seem to remember this episode took place shortly after the 9/11 commemoration in NYC last year. She left the ceremony early - I believe "dehydration" was blamed?
She has all the symptoms of advanced Parkinson’s disease, she rides around in a personal ambulance, and Chelsea’s Manhattan condominium has one whole floor as a dedicated hospital room.
http://www.webmd.com/parkinsons-disease/guide/parkinsons-disease-progression#1
https://nworeport.me/2016/09/14/chelsea-clintons-apartment-is-secret-medical-facility-for-hillary/
Just saying.