NAH. As a 24F who is planning a wedding herself, but also lost her dad, I've been on both sides before. Losing a loved one is incredibly hard and heart breaking. No one truly understands until they themselves have lost someone that meaningful in their lives. OP your fiancee isn't really an asshole, she just probably doesn't understand your side completely. That being said, I also understand what it is to postpone a wedding and forfeit hundreds if not thousands of dollars. When a couple is young -perhaps fresh out of school and still paying off school debt, this notion can be hard to deal with. Ultimately, if I were faced with your decision though, I would have done the same thing you did. As many in the comments pointed out, your loved one is gone but you can reschedule the wedding.