The top of the foot looks perfectly normal and there's no swelling. She doesn't limp at all. She's not favoring that foot; however, for the past two days or so she's been lifting that foot and using her beak to "check" on it (maybe once or twice a day in the past two days)it looks like a scab with something protruding from it. Did you try a gentle squeeze to see if anything comes out?
what does the top of the foot look like? Any swelling/redness? how does she walk? any limp, is she favoring that foot?
Hard to tell at this juncture, that's why poultry parent said "sort of". I am also in agreement with that.