New Development: Problem with right foot

Grace developed pain in her right foot as shown below around 3:30 pm (when it was time to go home from school). Its not a blister. Just slightly swollen and reddish.

I called Mary who thought Brigid would need to see it. Brigid called and told me to 1. ice it, 2. give her Motrin, and 3. try tomorrow. We are to skip our exercises for today. If she is still sore tomorrow then I am to bring her in to see her at 1:30.