Fans and former Happy Days co-stars are mourning Erin Moran, who was found dead in southern Indiana on Saturday. The AP reports that no cause of death has been determined for the 56-year-old former child star, and an autopsy is pending. The Harrison County Sheriff’s Office says emergency workers found her around 4pm after receiving a call about an unresponsive female. The recent life of Moran, best known for her role as Joanie Cunningham, is as mysterious as her death, reports the Indianapolis Star. She moved to Indiana with husband Steve Fleischmann in 2011, but is believed to have struggled with homelessness after being kicked out of the trailer they shared with Fleischmann’s mother.