AITAH for not attending my friends wedding because my husband wasn't invited?

I lived abroad for a year after I graduated university. While living abroad, I met Kylie. Kylie and I are originally from the same country and actually went to the same university but we didn't meet until we both moved abroad. We became good friends for the year that I lived abroad. I also became friends with her then boyfriend, Kyle.

I moved back to our home country and Kylie and Kyle moved to a different country. We kept in touch and we would get together when Kylie came home to visit her family. Kylie and Kyle met my husband during some of their trips home.

Kylie and Kyle got engaged and sent me a save the date. I messaged her and told her that I was excited for them and excited to see them at their wedding.

I received the invitation for their wedding and went to RSVP on their wedding website. It would only allow me to RSVP for one person, just myself. Initially, I thought it was just an oversight so I messaged her and asked if my husband was also invited. She said he wasn't because they were trying to keep the wedding small (about 100-200 people).

Their wedding was held in our home country. It was a three day wedding about a 12 hour drive from where I live. It's in a rural part of the country so there was no option to fly there. When I received the save the date, my husband and I had discussed taking a week off work to go to their wedding and explore that area of our country.

I decided I didn't want to drive all the way there and attend a three day wedding without my husband, so I RSVP no. I told Kyle that I was sorry and that I would have loved to have been able to go but that I wasn't able to make it work. I didn't tell her it was because my husband wasn't invited but I think she probably knows that's why I didn't go.

Now she is mad at me. So AITAH?