The Girl with Glass Feet by Ali Shaw (read by Heather O’Neill) is a fantasy-mystery about a woman suffering from a strange milady: her feet are slowly turning to glass. Why is this happening? How can she stop it? What’s going to happen? You’ll have to purchase the audiobook yourself to find the answers to all of these questions, but you can read more about the book in an article by Lanea from Books for Ears.
Source: http://booksforears.com/2011/09/21/girl-glass-feet-ali-shaw/