Can you post photos?
Where are you located in the world?
What do you feed, including treats?
Curly toe paralysis is mainly seen in chicks and it's due to Riboflavin (Vitamin B2) deficiency. I suppose there's always a possibility for a pullet of 6months to develop curly toes paralysis IF she's been fed a poor diet.
At that age, Marek's disease would also come to mind if there's paralysis.