so, what was her BAC? Is it posted anywhere? Was it alcohol or was the senior citizen perhaps impaired due to some other issue? Was it necessary to take the 70 year old and drive her to the pavement? That you see no problem with it, that is the disturbing issue.
A diabetic in ketosis will smell drunk and act befuddled and possibly belligerent.
Nothing that a face slam to the pavement and a night without medical attention in the drunk tank won’t cure, permanently.