My mum spent many years in a nursing home and for the last few of those was incontinent, bedridden, virtually blind and deaf and had some dementia. The manager at the home was desperate to get the extra funding and my sister and I attended meetings over several years with social services filling in copious forms to no avail. It appeared to us that the only way mum would get the funding would be if she was a danger to the staff or herself, her health didn't appear to come into it. I do hope you have more luck with your mother.