Illinois' oldest resident has died.
She died in her sleep.
When Holt asked her about the secret to her longevity, she said she didn't really know. "I just grew up well, I haven't done anything special". She later told people it was because she never married or had children.
Researchers studied Ralston's long life. She worked with Boston University Medical Center's New England Centenarian Study, a National Institute of Health funded project, probing longevity.
Longevity runs in Ralston's family. Her father died at age 91 and her brothers died at ages 96, 95 and 80.