My fiancée wanted to exclude my adopted daughter from the wedding; when I found out why, I was stunned.

My fiancée wanted to exclude my adopted daughter from the wedding; when I found out why, I was stunned. I'm 43 and have a 12-year-old adopted daughter, Sarah. She means everything to me. My first wife and I decided to adopt her because we couldn't have biological children. After my wife passed away, Sarah continued living with me. A few years ago, I met Nora (39). She and Sarah became fast friends and formed a very strong bond. Nora was incredibly excited when I proposed. A few days before the wedding, Nora mentioned that her niece should be the flower girl. I agreed, but insisted that Sarah should also have that role; it was a dream I'd always cherished. Nora's expression changed as if I'd made an absurd suggestion. "I DON'T THINK SARAH IS SUITABLE FOR THAT ROLE," she said. I was taken aback. Nora had never objected to Sarah being a part of our lives. “She’s my daughter. Of course she’ll fit in,” I replied. “I don’t want Sarah at the wedding AT ALL. This is my party, my celebration, so I decide who has the right to come and who doesn’t.” Nora refused to listen to any of it. She shouted that she couldn’t accept Sarah at the wedding. If I insisted, she threatened to cancel everything. I decided to leave the house and pick Sarah up from school. I forced a smile when she said, “Dad, I can’t wait for your wedding! I think I’ll look gorgeous in whatever dress Nora chooses.” I felt lost, not knowing how to get back home and act like nothing had happened. So, that night, Sarah and I stayed at a hotel. In the middle of the night, I received a text message from Nora’s mother: “You’re overreacting. Leave this girl alone. HER PRESENCE AT THE WEDDING IS UNNECESSARY.” I couldn’t understand why they had turned against my daughter so suddenly, but I wasn’t going to tolerate it. The next day, I came home and found Nora in the kitchen. "Explain to me why you don't want Sarah at the wedding." Nora hesitated for a moment before bursting into tears. "If I tell you, you won't understand," she said. After hearing her next words, all I could manage to say was, "OH MY GOD! Why didn't you tell me sooner?"