At the center of the seemingly incomprehensible case of Justina Pelletier lies one very simple, and unanswered, question: What did her mom and dad do to lose custody of their daughter in the first place? Gallons of ink have been poured on this story since last November, when a Connecticut TV station first reported the story of a sick teenager ripped from her family over a medical dispute between two hospitals. But having read every report on the case, including Judge Joseph Johnston’s ruling Tuesday, I can’t find a single claim — substantiated or otherwise — of bad behavior by...