Check underneath her foot pad, is it swollen and red, with a black scab in the center? If so, she has bumblefoot (a type of staph infection.) Here's an article on bumblefoot: http://www.the-chicken-chick.com/2011/07/bumblefoot-causes-treatment-warning.html
Thanks for the info. I will probably take her to a vet to have it taken care of.
That is probably the best option! Home surgery is cheaper than a vet, and I do it on all my chickens with bumblefootr, but secondary infections are possible and the surgery is difficult, not always successful and taxing on both me and the bird. Glad you have a vet that takes care of chickens.Thanks for the info. I will probably take her to a vet to have it taken care of.