I believe you are right about the cockerel and the Birchen pullet, but I think that your other pullet may be a Fawn Silver or Golden Duckwing. It looks like she has a salmon-colored breast in the pictures, which doesn't really fit the mold for a color based on Birchen.
Here is a picture of a Fawn Silver Duckwing from the bantam club: http://www.bantamclub.com/gallery/displayimage.php?album=search&cat=0&pid=167#top_display_media
Does she look familiar?
That is what I was thinking. I thought I put I thought she was Fawn or Silver Fawn.