Is she physically deformed or just small?
I have an article about Slowpoke, my deformed cockerel, here:
https://www.backyardchickens.com/articles/slowpoke-a-reality-check-after-an-assisted-hatch.77702/
I butchered him yesterday and took carcass photos but haven't updated the article yet. With his feathers off it was clear that he was so severely malformed that if he had been a female he'd have died trying to lay the first egg because there was only a 2-finger-wide space between his pelvis and his breastbone. No room for an egg to pass.