Curling foot on silky

[Jamesandjillliveonthehill]

Has anyone had a chicken with a foot like this? What can I do to save my silky? She still gets around, sometimes with a limp and sometimes without. I’ve never had a chicken with a foot like this before. She’s about nine weeks old

 

[DotToDot]

The pictures make it a little hard to see. Is there a growth, or does she just have extra toes? Could it be bumblefoot?