Hope she gets better and recovers soon.
But it is definitely time for her to retire.
That's an admirable sentiment, but it exceeds the bounds of reality.
Broken bones at Ruth's age are often a death sentence. She is already very weak and frail. At 85, and in her condition, her body is very likely incapable of healing three broken bones.
The stress of such a trauma alone, could (and often does) cascade into multiple system failures, any one of which can be fatal.
I think it's much more realistic to wish her the best outcome possible, under the circumstances. Perhaps that means forced retirement and round the clock hospice care through a slow and questionable recovery process.
My dad died at 87 last year after breaking a vertebra in his back. He was gone in less than three months. I watched him go through everything I described above.