Editor's note: Jeb Bush was governor of Florida from 1999 to 2007 and is chairman of the Foundation for Excellence in Education.

(CNN) – Kaleigh Fair had to make it work.

The Las Vegas teenager suffers from two different illnesses – one an excruciating immunodeficiency, the other a rare brain condition called Chiari malformation where portions of the brain protrude into the spinal cord.