We took her to Otamendi on Saturday night when the symptoms were really bad. She had to pay 10,000 pesos for a deposit and then paid $800 USD (on a Canadian credit card) for the tests. The doctors did not even think that she was suffering any kind of neurological disorder, despite the fact that she was slurring and could barely stand, almost fainting, pupils were dilated, etc.
Instead, they assumed that she was intoxicated somehow, possibly drugged. So they tested her for cocaine, among other things. A $200 USD test, by the way, that was probably unnecessary considering she is not a cokehead nor did she have the symptoms of suffering a cocaine induced overdose.
The doctor's also hypothesized that she had been drugged at the Friday afternoon milonga at Confiteria Ideal. We tried to explain that the milonga is like a senior citizen's convention and that it was highly unlikely that an 80 year old milonguero would be interested in spiking her drink…
She is now at Hospital Italiano. Thank you for all of your help!