She’s not alone, her dh is there but disabled so can’t do much at all, and a son who lives not too far away calls in regularly. Daughter lives too far to pop in.
They do have some paid help but stubbornly refuse anything more, though goodness knows it’s been suggested often enough.
Son and daughter are well aware of the calls we get, but we’ve told them that as long as we’re here and not tied up, we’re happy to help.
Having seen far too much of dementia in close relatives, I don’t think it’s that - not yet anyway - since when she’s not in a tizz she’s quite lucid and can (intentionally) be wickedly amusing.