MIL is now housebound and increasingly frail and confused, but flatly refusing any help.
This leads to periodic crises which usually involve DH having to speak to her GP's surgery. As he does not have Power of Attorney, this can be tricky, so would there be any mileage in preparing a letter and getting MIL to sign it to say that the GP is authorised to speak to DH about her health?
Would they take any notice of it?