Hi Joko
The first contact should be getting a Care Manager appointed to your Aunt. Ask the Charge Nurse on the ward in the hospital to contact a Care Manager who will be based in the hospital.
They will visit your Aunt and advise of the options available to her.
The paperwok will then go ahead and an assessment done.
As a previous aber said, it may be a good idea to get Social Services in to help you Aunt. Mornings to help her up, wask, toilet and breakfast. They could also pop in at lunchtime for something to eat, then again in the evening for dinner and assistance to get into bed.
She could also consider Meals on Wheels twice a day.
If she is really bad, then they do provide a Nightsitting service but people have to more or less be terminally ill or suffer Dementia to qaulify for this service and it is only short term.
Have a word with the Social Worker in the hospital anyway and your Aunt will be entitled to the upper limit of the full attendance allowance.
I do not know what the law is in England for care, but in Scotland, personal care is free, the elderly only pay for Home Helps for shopping and housework.Talk to Social Services. They will gude you through everything.