"The theory is that when you soak in an Epsom salt bath, these get into your body through your skin. That hasn't been proven, but just soaking in warm water can help relax muscles and loosen stiff joints. People use Epsom salt baths as a home treatment for: Arthritis pain and swelling."
Classy lady, I suspect. I used to bath in epsom salt baths after lots of exercise. Perhaps you've been working her too hard???
