My daughter is sad because I attended my niece’s art showcase instead of her theater showcase. Am I wrong?

My daughter (15F) had her school’s winter showcase last weekend. It wasn’t a full play, but a collection of scenes and monologues from different performances that drama students had been working on. My daughter had a good role in one of the featured scenes and was really excited about it. While she never outright asked me to be there, I knew it was important to her.

The issue was that my niece (16F) had her first big art showcase that same night. My sister’s husband passed away when my niece was little, and since then I’ve stepped in where I can. My niece is incredibly talented in painting, and this was her first time having her work displayed in a real gallery alongside other student artists.

My niece made it clear leading up to the event that she really wanted me there. I had already told her beforehand that I couldn’t come because I was going to my daughter’s showcase, and while she said she understood, I could tell she was sad.

The night before the event however, she called me and broke down in tears telling me how much it would mean for her to have me there. She said she felt like this was one of the biggest moments of her life, and she wanted me to be proud of her the way a dad would be. That completely shattered me. I felt like if I didn’t go, I would be letting her down in a way that would stay with her for a long time. So after the call, I spoke with my daughter and my wife, and asked them if I could go to my niece’s showcase, and they did give me the go ahead.

However, the day after the event, my daughter was really sad and upset. I did feel guilty, but also I did ask for permission from both her and my wife before I decided to go to my niece’s showcase. My wife however told me that I should have stuck to my original plan regardless, and that our daughter has even cried a few times since her showcase.

Am I wrong?