A West Australian woman who murdered her 71-year-old mother in Tasmania by smothering her with a cushion has argued her 23-year jail sentence is too excessive partly because of an "oppressive" police interview.
Natalie Maher, 49, was last year found guilty of the October 2019 murder of Veronica Corstorphine, whose decomposed body was found in her bed at home almost a month after she died.
