“And Kate thought about a time, long ago, when she had witnessed an ongoing romance between two mental patients. As a teenager watching their unlikely relationship unfold in front of her, she had understood that people did whatever they needed to do to be happy, regardless of their unfortunate circumstances. She supposed her mother’s day care center was born out of the desire to feel needed, while making use of the skills that were practically all she had managed to acquire during decades of battling a debilitating illness.”