My wife's grandmother is dying.

My sincere condolences.
My grandmother left us last summer, also 95, 8 childeren. Papa is hanging on ( also 95 ) so there still 5 generations of us alive today.
I think the sadest part is loosing those anchors or glue that held the family tight.
Those traditional gatherings like Christmas, Mothers Day, will never be the same for my generation. We can only pray these traditions are as long standing and cherished for our grandchildren. Peace