Schoen was last seen in Jacksonville, Florida on July 21, 1974. She left her grandmother's home on west 19th Street to walk to Hanna's Food Store, about two block away. She never returned and has never been heard from again.

That year several young girls between six and twelve disappeared from the Jacksonville area. Schoen was the first. Sisters Lillian Annette Anderson and Mylette Josephine Anderson went missing on August 1, Virginia Suzanne Helm vanished on September 27 and Rebecca Ann Greene disappeared on October 12. Helm's body was found a month after her disappearance and Greene's body was found three years later. Schoen's body and the Anderson sisters' remains were never found. Because the abductions happened in different parts of the city, authorities don't believe they are related.

Schoen was a student at Love Grove Elementary School at the time of her disappearance; she made good grades and was involved in the Brownies. Her disappearance remains unsolved and her family hopes she may still be alive.