OK, so I've looked at the Alzheimer's Society website and I know we need to get her to sort out a will and a Lasting Power of Attorney asap, is there anything else?
She lives on her own so on a practical level should we get her to replace her gas cooker with an electric one?
She doesn't like using banks and only has a Building Society account where she draws out cash every month and pays all her bills that way so we are going to have to persuade her that is no longer a good idea!
She's not very sociable and has a tendency to be secretive and suspicious, even with those close to her, she has the default view that everyone is out to get her. 
This is going to be a nightmare isn't it? 
Any tips or experience or advice much appreciated.