Humm...I have only 2 female EEs and the neck feathers on yours do NOT look pullet like.
I hope I am wrong.
My EEs have rounded neck feathers which is indicative of pullets whereas cockrels have pointed neck feathers.
I hope it make sense?
I, also, hope I am wrong...for your sake! LOL!
Good luck!
I sort of know what you are going through. Recently I had my doubts about the Blue Andalusian chick born this past Summer. I wanted it to be a roo and most said it was a pullet when I showed picture.