The apparent suicide of fashion designer Kate Spade is a tragedy, but not a huge surprise to older sister Reta Saffo. She tells the Kansas City Star that Spade had been struggling with mental illness for years and the stress and pressure of her famous brand may have "flipped the switch where she eventually became full-on manic depressive." The death, she says, "was not unexpected by me." Spade was found hanged in her New York City apartment on Tuesday. Saffo says that in 2014, her sister was transfixed by news of Robin Williams' suicide by hanging . "She kept watching it and watching it over and over," Saffo says. "I think the plan was already in motion even as far back as then." Spade, whose husband, Andy Spade, was reportedly home at the time of her death, left a note telling 13-year-old daughter Frances it wasn't her fault. More: