so - my stepdad is a bit of a flake when it comes to parenting and has not been at my sister's high school, college or MBA graduation (his daughter, my half sis). She is getting married now and wants him to give her away. Fine. But now she wants his name on the invitation and so does my mom who is footing 100% of the bill and who has gotten zero help for my sis since the day they divorced. I don't get it, he is doing absolutely nothing except showing up for the ceremony and both my sis and mom acknowledge that there should be a back up plan in case he flakes and doesn't show (given his track record with all of the other momentus occasions in my sister's life that he's missed). Why would they risk having his name on the invitations?!?! is there any way to avoid this? any way to mention him in the most casual of ways so that everyone knows that my mother raised us on her own and he is just a warm body that may or may not be there for the wedding? I'm at a loss. My mother never remarried and still has my step dad's last name so putting them together on the invitation just gives the illusion of togetherness which could not be further from the truth. Thank you in advance for any help!