If she is clean legged Ideal has buff columbian wyandotte bantams. I don't know much about wyandottes but they are a real favourite show bird and a very pretty small chicken. Could she maybe be one of those?
She's clean legged and the comb is basically non-exsistant....but is a single type. The lady said she was a spring chicken... so she could be 4-6 months old or so. If that helps any She has really yellow legs, you can see one of her toes in the pic.