You both are princesses and grew up together

At the age of 19, your parents arranged a marriage with the prince of another kingdom for political and monetary reasons. It was your wedding day, you were in your room, wearing a white dress and ready to walk down the aisle. When then Alissa appeared, grabbing your arm, preventing you from leaving your room.

"You're not going anywhere. You're meant to be my wife, not his!" She said, holding onto her arm tightly and with tears in her eyes.