Then giving her a chance to do something might have eased her pain. It couldn't have hurt Terri.
That doesn't change whether it was appropriate.
A nurse could have supervised. It seems more appropriate that a nurse be in the room than a cop.
A real mensch that one, eh?!
It would not have eased Mrs. Schindler's pain. It would not have changed the outcome.
It may have only encouraged those who would disrupt what had been decided for Terri. The ugliness and distrust surrounding Terri's situation was far beyond the simple and benign motives you pretend were involved here. A long long series of events led to strict limitations on what was allowed to be done to Terri, limitations that would never exist in a normal circumstance like this. This situation can't even be put in the same ball park as normal.
I feel for the utter desperation Mrs. Schindler must have felt.... but that utter desperation was the reason for the very strict limitations, and the reason for the cops.