The Girl in the Bird: Romance and Alien Power in the Current Middle Ages by Christine Talley
I liked the story, and found there could be more details that would have been
helpful. I'm not familiar with SCA but it seemed to work well in the story. The story was slow-paced and had a mix of romance and sci-fi, but it worked for the premise of the story. Story needs a little more polishing, but it was a good read, and I see good things coming from Talley.