My mum has always been the bossiest of the family with strong views etc. she's in her 80s now and Dad died a long time ago. She has many friends but due to health she doesn't go out as much as she used to. My sister and I do try and help her out but both don't live local to her. I have grown up children but sister doesn't so my sister gets called upon more. She is also married but no children. Recently my sister and I have had some serious medical issues yet Mum still says nobody goes to see her, how she doesn't want to be here, etc using emotional blackmail daily till eventually we do what she wants. Whenever we do go to see her, her house is a constant mess yet she will sit and watch whilst we clean up after her. This is getting more and more. I recently sent a text to her to back of from my sister which caused yet another argument. How do we stop this for our own mental health?