it appears that while leaving babies to cry it out can lead to the eventual dissipation of those cries, it also appears that this occurs due to the gradual development of apathy in the child. The child stops crying because she learns that she can no longer hope for the caregiver to provide comfort, not because her distress has been alleviated.
Sprained ankles are annoying. If you can prop it up, ice it down, and stay off it for a while it should heal pretty quickly. If you're like me and have a life you need to deal with that's not always possible. http://thezumbamommy.blogspot.com/2013/08/the-sprained-ankle.html