I feel sad tonight. I have just argued with my sister, who is my closest sister and friend, Incredibly, we have never had a cross word between us. I am in my 60s and she is 6 years younger. I always thought we were almost of one mind, as we were so similar. However, since the both of us have become main carers for our lovely Mum (who suffers from Alzheimer's and has been for 2 years), there has been a strain between us. The main issue is our mum is very manipulative and uses emotional blackmail to try and seek more visits for my already over-worked brother. Tonight our brother spoke with mum on the telephone having travelled back from Scotland and mum asked him why he could not come over tonight to see her. This made him feel guilty and negletful. I was upset for him and gently said to mum that she must understand that my brother requires rest after a long journey and will come to see her tomorrow after work. She replied that she did not force anyone to come and see her, and got upset with me. My sister then got humpy with me and defended mum. I was upset and felt misunderstood but mainly so disappointed that my sister could or would not see my point of view. I told my sister how I felt but she still sided with mum. I have gone into a room to be by myself and to contemplate. I do not want us to work against each other, as we have always been a good team supporting our mum. We have enough on our plate on a daily basis contending with the challenges of Alzheimer's. I feel sad that my sister and I have this little rift. Does anyone have some sound advice?