Yes, you are correct with the C. medulla and self-devaluation, which she confirmed. She has a strong warm pain and swellings so we can assume it's basically a regeneration phase, but the pain and rigidity are also stressors that prevent her healing out smoothly. 
This is often the case in the locomotor system.
I'm thinking of a [https://www.physiotherapy-treatment.com/calcaneal-spur.html|heel spur] and would ask her if this description fits.
In her case, you'd want to find out about the meaning of the heel to her, and what triggered its abrupt appearance. All other symptoms were triggered by the pain in the heel, and not being able to stand and walk.
So, you get an idea what resources she needs.