My Mum is 85 and regularly meets up with a slightly older friend for lunch. The friend's memory has been deteriorating for quite a long time and my Mum is concerned. This lady is often late, arrives on the wrong day and once got lost on the way. She is constantly losing things, like her teeth and her bus pass. Mum says she seems somewhat depressed and less inclined to chat. She is a widow living alone with no family; she has a sister who visits occasionally but we have no contact details for her. This lady admits that her 'memory is not what it used to be' but Mum doesn't think that the GP is aware of the increasing problems she is having. It's a tricky situation and they are not especially close friends really, they just meet socially. Would it be the right thing to find out who the GP is and pass on Mum's observations? She is a churchgoer, perhaps that's another avenue. Can anyone offer advice please?