Is the coordinator a continuing healthcare nurse trained in mental healthcare? If this is not the case then I would suggest you request a contact number for a specialist mental health nurse, because your wife is entitled to continuous assessments according to NICE guidance, (and she doesn’t have to be in a care home) to receive these standards.
http://www.nice.org.uk/media/7EF/3F/Dem ... andard.pdf
You could contact “Admiral Nursing DIRECT specialist dementia nurses offering support. They are always posting on facebook and offer regular chats online.
“Admiral Nursing DIRECT is open now until 8.45pm. If you have any questions or concerns about dementia please call 0845 257 9406 and speak to an Admiral Nurse. firstname.lastname@example.org
Tips - lots of hugs and reassurance worked for a while but, if the person is in the late stages there is very little one can do, other than seek medical help for easing brain disturbances.
PS, a person with dementia, doesn't have to be incontinent to get urinary tract Infections - Carers should keep an eye on the water works regularly to check; colour, smell, quantity leaving the body otherwise kidney damage could occur and this often leads to dehydration.
I also agree with the above a well lit room and lavender does work well in the early stages to help calm the mind.