Hmmm.. well, the only thing I can see that might indicate BF is in the bottom picture - and it's not the foot you're trying to show - it's the other foot. That little spot. Press around and see if you feel some little hard "bumps" - if so, those would be the telltale "kernels", if not, I don't know what to tell you. You could do some research using key words "swelling, feet" or something like that, and see what else this could be.
What kind of antibiotics are you giving her?