Mum brain tumour

Mum has a brain tumour is 75 we’re it is it’s in centre of brain treatment is stopped because nothing can b done to save her, her speech getting bad eating not great temperature very low ie 33.3 she won’t keep a huggy blanket on to heat her she doesn’t know any better thing that worries me hospital are not doing nothing to heat her not drinking much I think or they have told us today she’s medically fit to b discharged care home my only option any help or advice please it’s not right to let a woman freeze to death no drip up either for fluids