Mindy Cohn opened up about her five-year battle with breast cancer to People in a story posted Wednesday. Diagnosed in 2012, the former “Facts of Life” sitcom star said she kept her illness a secret for a long time. She had a double mastectomy and was also treated with chemotherapy and radiation, People noted. “I’ve always been an optimist,” she said. “But the cancer metastasized. It kept spreading and coming back.