NoHaudin I don't know how the system differs above the border but in England there should be no discharge without there having been a discussion about what care is needed/in place. My mother ("my daughter has other responsibilities, she can't be over here all the time looking after me") came home with a full package of home support, my MiL ("my DIL is soo good, I'm so lucky, she's so wonderful") left hospital with absolutely nothing. Oh. no, wait, she had me.
It is important to recognise what your mum is going to need help with and be realistic about the extent to which the family can provide that.