Well my grandmother is nearly 100 years old. She's had serious health problems for over 50 years, and she's suffered greatly. She has had cancers, tumors, strokes, four brain surgeries, countless hospitalizations, and much more more. And when I say much more, this is a bit of an understatement. She is still brought to the kingdom hall for every meeting, assemblies and out in service. She really isn't in any condition for the grueling schedule they put her through, and things happen that upset her greatly (falling and pooping her pants as just two examples).
It's inevitable that she will pass. I don't know what to do about the KH service. I think I will wind up going and suffer through it. I try not to think about it.