Swollen, blistered feet
How cold has it been where you live this week? Could she have suffered some frostbite? It can cause swelling and blisters, but usually can cause darkening of the tips of toes. One or two toes look a little darker. The swelling between the toes looks like bumblefoot can when it is on top of the feet between toes. Other causes for swelling are mycoplasma synovitis or other bacterial or viral infections in the bones, or articular gout. If you think it could be frostbite, keep her inside and warm, and apply Vetericyn wound spray to her feet. Try not to break blisters or to rub her skin.