Not sure about CCSA recipient. But for elderly living alone, (not receiving CCSA), nearest relatives like sons or daughters can hire helpers (with themselves as employers) to live and look after the elderly person. I have done this for years.
I asked a friend who used to work at the SWD today. It seems that in your popo's case, there is only one option when she can no longer look after herself: enter an old people's home. Places in private homes can be found quickly but the quality is not so good, NGO homes have a long queue. Good luck!