I remember many years ago when I was in hospital, in a gyne ward, as it happens, so there was a huge variety of ages there.
One morning an older woman was admitted to the bed next to mine.
She had been a private nanny all her working life, she told me, was clearly of the old school and still had that old fashion nanny manner.
Soon after she was admitted, one of the, very young, student nurses came into the room and started, not only addressing her by her first name, but did it in a special 'reserved for old women' tone of voice.
She was clearly furious and rather shocked, something the nurse seemed completely oblivious to.
I have no idea if she ever said anything but I suspect not.
Perhaps, people who work with older people need a bit more training around these situations.
I don't mind people calling me by my first name but I do object to them doing it in a tone they'd use when talking to a rather dim pet dog.