AITA for only giving my niece a £20 gift card for her wedding.

I was invited to my niece (23) wedding. I am her biological uncle, but have only met her once when she was a child. I didn’t attend the wedding and instead sent a £20 Amazon gift card.<br><br>Ever since, I have been told by my family that I am an asshole because I didn’t go to the wedding and only gave her a £20 gift card. I have no plans of getting closer to her and didn’t want to go to the wedding.<br><br>AITA?