My girls name

Fiancé wants to give our daughter the middle name Victoire after his late grandma. I am all for it except we have had her name picked out before we even had our son a year and a half ago. Her name is Olivia Grace. My oldest's middle name is hyphenated and I only did that to shut his dad up Bc I wanted his middle name to be Tristan but he wanted Alexander and his dad was relentless controlling manipulative and it was his way or he threatened to leave me. I suggested just giving her the extra middle name, no hyphen and he hates that and wants her first name to be hyphenated as Olivia-Grace. That is NOT how I have been ordering her specialty items or even how I envisioned it for years. I literally went alone and cried Bc I don't want to change our baby's name. I thought it was settled all this time our baby would be first name Olivia middle name Grace. I get that I'm probably being too emotional about it but I HATE they hyphen. I hate it for my oldest and I hate it now. I am all for Olivia Grace Victoire. Just no hyphen anywhere. I feel like my dream is jut being crapped on. After two boys I get my girl and now we're arguing about her name that she's had since before we ever got pregnant with our son?! I'm so upset.