New York Times #1 bestselling author Nic Stone took to the downtown Spokane theater stage Thursday night, sitting cross-legged with no shoes, to talk about mental health and the unfortunate stigma that comes with it. The talk was part of The Spokesman-Review’s Northwest Passages book club series.Stone said part of the reason she wrote her latest book, “Chaos Theory,” was to destigmatize “brain health.” The novel chronicles a pair of high school seniors who struggle with mental health problems.“This was the most personal book I’ve ever written,” Stone said.