My brother is an alcoholic and still lives with my very long suffering mother who is at the end of her rope. He’s recently been detoxed in hospital, yet again, but my mother overheard him have a conversation with my uncle (fraternal) about going out with him this weekend. My uncle goes out every weekend and he will definitely be drinking. My mother now wants me to call my uncle to tell him to cancel. I told my mother I’m really not comfortable doing this and it would be an awkward conversation for me to have. She became quite angry at my unwillingness. I’m so done with the whole situation having dealt with his and my father’s addiction all my life- I find it hopeless and infuriating. I can’t help feeling there will be negative fallout from a phone call. Do I just suck up the awkwardness for my mother’s sake?