My sister and I aren’t super close, and my FH doesn’t have a lot of close guy friends (he moved to Chicago from LA), so we opted for me to have my dad’s two closest friends as my attendants (he passed away three years ago) and my FH’s sister’s as his. I am having my uncle walk me down the aisle (because my mom didn’t want to). My mother is upset because I’m not having my sister walk me down the aisle because “she looks just like him with her hair and a tux.” My sister and I are not close and she is constantly getting angry at me for mentioning things that unknowingly offend her. That being said, I feel that I need to find a concrete way to incorporate my sister so as not to secretly upset her and to calm my mother. Ideas?