This site is my last hope. I am on a few FB chicken groups, no one knows. My friends have no idea... I have also had a chicken breeder from C&L farms come out to look at her too. (they live down the road from me but are a very large farm)
I am so new to this that I don't even have an actual coop yet. LOL. I bought chicks that are starting to look like this. I found one place that labeled them as some kind of Rock, maybe Plymouth. Mine turned out to be roosters, I have to let them go. Good Luck!!
Regardless, she's not a "breed", she is a mixed breed hen. You'll never know absolutely, but saying she's something barred mixed with something crested is a great start. And if she's calm and a good layer, that's what matter to most of us.