We’ve all got that “Crazy Aunt Betty” who talks to dust bunnies or that clowning uncle who always has a bit too much to drink at the family reunion. We’ve all seen people walking down the street alone, waving their arms, apparently in a heated discussion with no one in particular. (Of course, this was easier to spot before the advent of Bluetooth ear pieces!) We recognize that those people may be dealing with some mental health issues. 

But how about the quiet girl sitting in the...