Interesting! So both extra toes and they're fused. I assume she has no issues getting around?
It's not an issue if it doesn't bother her but I wouldn't hatch her eggs (if that was something you ever considered, now or future).
Are her feet shaped like the photo MysteryChicken posted? Or different?
I had a special needs hen with extra toes but her feet were also misshapen, so the toes didn't look like what a Silkie or Faverolles would have. She had 3 normal size toes in front but 2 very short back toes, which caused...