On 12/29/18, my stepdad wordlessly walked away when I asked him to walk me down the aisle. He has always hated my dad and I had just stated that I wanted my dad to officiate and my mother to be my matron of honor. He hasn't spoken to me since. 2019 was awful. Emergency surgery to save my life, sexual assault, multiple financial hits, and 10 other unfortunate events. He didn't call. He was the archetypal abusive stepdad and I forgave him. My sister (15 years younger and turned 18 in Feb 2020) has taken his side and blocked my phone number. She told me she doesn't believe how awful he was to me (and brother) when I lived under his rule. She told me that I need to patch things up and that he's not at fault. I forgave him for the abuse and he, in turn, broke my heart. I grieved the loss of my sister. Sobbing-on-the-floor-at-unexpected-times grieved.
We went on with wedding planning despite my near-constant heartache. We made the decision to not to include anyone in our wedding ceremony and to not allow toasts. Everyone is a guest. We were supposed to wed on 3/20/20. I had begun to see the wedding as the light at the end of the tunnel. I had decided to reciprocate the estrangement following the wedding. I live in Seattle and we, obviously, had to postpone. We are re-issuing invitations to the same guests who RSVP'd "yes," but I honestly don't think I can deal with seeing my stepdad and sister on my wedding day. I'm afraid they'll upset me on my wedding day. I'm afraid my stepdad is going to be throwing faces of disgust at my dad. My stepdad told my brother that he wouldn't attend the reception if my dad was there. Stepdad later denied this when I asked my mom about it.
NOTES: Fiancé and I are paying for the wedding ourselves. My mother cannot sway my stepdad to talk to me; I must drive to their house 1.5 hours away and apologize for making him think he ruined my wedding. I'm not kidding--that's what she told me he expects.
COMPLICATION: My dear and wonderful grandmother is slipping away into dementia so there's no way I'm not having the wedding exactly as I planned. It's the one dazzling, fancy affair the likes of which my grandmother and I always dreamed of attending. She's not all gone yet.
QUESTION: Should I still re-invite my stepdad and sister after all this? They won't talk to me and I'm a "liar" for telling the truth.