We had this dilemma, @MrsBennetsPoorNerves , so here goes, sorry,,it’s rather long!
Even when she could no longer even make herself a cup of tea, my poor Dm still didn’t think there was anything wrong with her. This was down to zero short term memory, it wasn’t ‘denial’.
After it got to the stage where she simply wasn’t safe to be left alone any more we went looking for care homes. If we’d consulted her, she’d have angrily denied that she needed any such thing, so we didn’t tell her.
She was self funded, we’d never involved social services* and didn’t feel the need now - we didn’t need anyone who’d never met her telling us what her needs were - we knew perfectly well. By this stage she’d had dementia for at least 7 years.
Actually getting her there (a v good dementia only CH) was the problem - if she’d twigged where she was going she’d simply have refused to leave the house. It was planned like a military operation - her GP prescribed Valium to make her more tractable - she had long hated going out anywhere and would v likely have refused to leave the house. DSis and I were taking her, a 60 mile drive to a care home near me, pretending we were going out for lunch, true in a way since the CH had asked us to arrive in time for lunch.
No exaggeration to say that Dsis and I were wetting ourselves all the way - what if she twigged as soon as we arrived? But it’s a measure of how bad her Alz was then that despite it being pretty obvious that we were in a CH, she really thought it was a restaurant and offered to pay for us all! Which of course made us all feel terrible - by this time Dbro and a BiL had joined us - they’d stayed behind to ‘do jobs’, aka bring her things, secretly packed by Dsis the night before, and some small pieces of furniture.
*the care home did insist on a visit by a SW before the place was confirmed, to make sure my DM did really need residential care. That all went much better than I’d expected, TBH it was obvious how bad she was, ditto who the woman was, but DM didn’t twig what was going on.
After the (very good) lunch, it was Dsis who undertook to tell DM she was staying - I was far too chicken! Dm was not at all happy but didn’t make too much fuss. I can’t say that she settled quickly or was ever really happy there, but then she hadn’t been happy at home either (never really was after DF died) - so often fretful or anxious about things she couldn’t even name.
She was there for very nearly 8 years until she died at 97. It was an Abbeyfield Specialist Dementia Home, in case anyone wants to know, and IMO it’s a testament to the very good care she received that she lasted so long.
If anyone thinks it was wrong to get her there by stealth, given that she was never going to agree, I have to say the alternative would have been a much worse crisis than any so far, e.g. a fire in the kitchen (there had already been a small one some time previously) which would then spread, and she’d be unable to get out, since she’d have hidden all her own door keys and (of course) forgotten where she’d put them.
By the time we took the decision, there was simply no alternative.