Older adults social worker here
Also someone who cares for older relatives who have disabilities including a terminally ill parent.
Your posts are hard to read OP.
I think you said you were Scotland. Either way , when you aren't clear with the local authority, they won't have a clear picture - you can go back to them if you feel things have deteriorated.
PPs have suggested you talk to GP. That's a good start, make a bullet point letter or email that you send to her GP. COPD end stage isn't necessarily "about to die" it depends on the language used by medics and what her needs are- but it does mean she is a poorly and disabled lady.
Am I right in understanding the following- ?
- she is confused and hallucinating
- she makes accusations about things being stolen?
- she wanders ("walks without purpose") out of the house day or night if you aren't home?
- she has unexplained injuries? is accidentally hitting herself by walking into things? What are these injuries, can you write them down and photo as they occur?
- what else are her basic needs? Will she eat, drink, wash, dress, manage her meds, sit still and occupy herself if you aren't there?
- does she know she is ill?
- does she know she has dementia- are older persons mental health team involved ie a CPN
- does she make her own decisions - dementia doesn't mean she can't , it's whether she understands , retains and can weigh up the risks...
- why are community nurses involved ? does she have a wound that they dress or diabetic injections they do?
When you have clearly lister bullet points and facts listed which can be evidenced, then please email them to her GP and ring the local social services to request a needs assessment and read them the bullet points. They have a duty to offer a reassessment if things changed from when they last gave you advice or arranged what they did.
They would have offered you the service they did before as you'd have been asking for a break and possibly things weren't as bad as they are now. You need to be clear that you are withdrawing and no longer able to continue as her informal carer living with her.
Tell them you are withdrawing or reducing your support. The local authority are limited in public funds and have to be careful and evidence everything so help them out. Give them the same picture you suggest to us on here. They won't read in-between the lines so do your best to spell it out.