Thank you all very much for your replies this morning!
@Sarasa and
@Sirena that is really helpful information and revives my hope somewhat. Thank you so much.
I've also spoken to a council run home this morning and now have a much better understanding of their process - including that they can't accept even a self-funder without recommendation by the PWD's Care Manager aka SW. But were that to happen, the PWD would spend a week at the home, for in-depth care needs and also mental capacity assessment in the first instance. None of this was made clear to my sister by their SW!
Rambling aloud here, and please ignore if I'm spouting what you all know upside down and backwards, but it seems to me there is often confusion between general cognitive ability (as tested by GPs and Memory Clinic staff in diagnosis and progression of dementia?) and mental capacity (to make a particular decision at a particular time) as per the Mental Capacity Act. There is a Code of Practice for carrying out a mental capacity test
https://assets.publishing.service.g...7253/Mental-capacity-act-code-of-practice.pdf
This from page 45: "What does the Act mean by "inability to make a decision"?:
A person is unable to make a decision if they cannot:
1. understand information about the decision to be made (the Act calls this ‘relevant information’)
2. retain that information in their mind
3. use or weigh that information as part of the decision-making process, or
4. communicate their decision (by talking, using sign language or any other means).
The first three should be applied together. If a person cannot do any of these three things, they will be treated as unable to make the decision. The fourth only applies in situations where people cannot communicate their decision in any way."
My sister's and BIL's SW did not get anywhere close to assessing his capacity in this way, so I think her conclusion can be discounted. When I see my sister next week I'll be able to read the written-up assessments and then perhaps help sis make a decision(!) on next steps. Frankly, though, I think a complaint may well be in order. At the very least the woman has misled my sister at least once with inaccurate information, whether deliberately or otherwise.