Honestly , I ' d find an excuse not to go , start reading on narcissism in parents , and the art of grey rocking . It ' s a good thing your sister defended you , which probably means she ' s not like your mom parents . Many people have gone NC I have too , but to be honest I believe that it ' s beneficial to learn to accept these people the way they are . Understand that what your mom says is not the truth . If she brags about your sister , don ' t be offended , but praise your sister as well . There ' s a reason your mom does this . It causes drama and she ' s enjoying it . Just completely ignore the offensive remark and pretend you ' re all praising your sister , who ' s still on your side . I ' ve gone NC with my N dad , but I have contact now and I have learned to protect my sanity . He ' s ill , and he can ' t be held accountable , but how I respond to the situation is what makes all the difference . Don ' t be a wall , be the air . Whatever she throws at you , don ' t catch it , don ' t block it . Let it go right through you . It cannot touch you . You are the air . I found that this allows me to actually enjoy my fathers presence , even with his narcissism and his flaws . He ' s still my father , and I can now look at the good things I like in him . PS it took a LOT of time and THERAPY for me to get here ok , babysteps ! Breathe . There ' s only one superstar in your life and that ' s you ! All the others are only sidekicks or extra ' s . Your life , is your movie and whatever YOU want is important , certainly more than what an extra in your movie thinks of the main star