My mom is 87 and cannot live alone any more. My Older Sister if POA and I feel she pushes off her responsibility of asking mom what she want to do with her house. When I ask mom she acts and replies as if I have interest in her estate. I tell her that her other daughter want to know. She acts mean with me and then doesn't act like that with my sister. This is one of the many faces of abuse that we have grown up with. My sister also suffers a loss of her husband last year. However I just cannot do it no more I feel that it puts a strain on my marriage. I am tired, cranky when I have to deal with Mom. Is it selfish to feel like this? And how should I present it to my Older Sister!?