Well done for getting at least a foot in the door with the GP surgery! You say the doctor wants to come again tomorrow so i assume they have already tried to visit? Or did they just try phoning her & getting call barred? I would have a go at unbarring the GP surgery number. Your mum doesn't need to know that's what you're doing. Your brother barring the number is a welfare concern that the GP needs to take seriously. Also I'm bit unsure what the consent is for that you mention regarding the GP. Is it consent to visit her? I wouldn't have thought they would need that when concerns have been raised. At least they are more aware of the situation now so hopefully things will happen.
Good luck with the hospital tomorrow
Good luck with the hospital tomorrow