Well, I'm no expert, but if my buff and blue hen's comb were smaller, the girl on the right in the picture would pass as her sister... It's hard to tell how long your girl's legs are (short legs are a hallmark of Japanese), and if they're blue or yellow (or brown?). Sushi's wings point down and her tail sticks stright up, just like your girl's. Apparently, Japanese throw the occasional strange color, especially if the breeder is attempting a difficult color like blue or a difficult feather structure like frizzle. Sushi's dad was frizzled and her mom was blue, so that explains her weird color.