Hello and welcome to BYC from Kentucky! She is very pretty but I'll go with her being mixed as well. You might want to post this question in the What Breed or Gender is This? https://www.backyardchickens.com/f/15/what-breed-or-gender-is-this section. Here are two images of a few FBCM we have on our farm. They are not show quality by any means but something for comparison. Also. notice the feathering on the feet.