NEW YORK — Cheslie Kryst’s hearbroken grandfather struggled Monday to figure out why the former Miss USA, “a light that shined so brightly,” would kill herself. “To be extinguished so fast is just devastating,” Gary Simpkins told the Daily News by phone from South Carolina. “So hard to imagine one minute they’re here and one minute they’re not. And you know that the only [way] you’ll ever see them again is when you yourself pass away.” “She was such a fantastic person,” he added. “She was kind. She was generous. She felt for other people. She tried to help other people. She was just one of tho…
