What this actually needs is somebody close enough to the family but not too involved to point out to Mother what LW has been doing and what 'the fair thing' actually is. This was fortunately the case with my mother vis-a-vis my grandmother, whom she had been caring for a significant period. A relative by marriage (who was the sort of person she would listen to) stepped in and pointed out a) what Mum had been doing for her and b) the initial plans for her will involved pretty much giving away the roof over Mum's head by dividing it up with her brothers, who had not done a hand's turn or meaningfully contributed.