Although I'm suspicious of the neighbour's actions, I'm far more alarmed by the daughter's neglect, inaction - and negative, uncaring attitude.
If you cannot visit and care, you make suitable arrangements, plan, check and liaise with hospital, home and carers - surely? A forty minute journey is short, so, if you can sit in a chair, you can sit in a car.
I've seen too many examples of 'caring' relatives popping up suddenly, from nowhere, with pound signs in their eyes, when a frail elderly person nears their demise. They expect an inheritance, simply because they're related. Shameful!