(or just maybe she is old and the logic paths in the brain are supercalcified, in which case you hand her her cup of tea and her shawl and put her in the corner near the fire in her favorite rocker and periodically say soothing things like 'Yes greatgranny' while ignoring her...)
*shrugs*
I dunno..
I’ve not had much experience with the very aged.
So color me perplexed.