I have in effect advised you to rise above it so to speak and treat your mother as if she were not a relation but some demented old lady. I know this is not easy advice to take and maybe you cannot treat the old lady as if she were simply a professional client or a patient. In which case you should take care of yourself first.
(Tel.gram @Harley40)BuY W e e d , coke bloW in Queensland
(Tel.gram @HARLEY40)BuY W e e d , coke bloW in Sydney
.
.
.