I have had concerns about my elderly DM (83) for sometime. She has never been an easy person but has become increasingly aggressive and paranoid- she is making my DF’s life a misery. Today she is adamant that she drove to my house last week and put a letter through the door. I have not received a letter. She was very angry when I told her this and is obviously certain that she did. She appears to be well until you spend time with her when you realise that at times she cannot follow a conversation and her conversation is on a loop