Thelma's life came to a tragic end on May 11, 1938 when she died from a cerebral hemorrhage. A few months earlier she had a nervous breakdown and entered Merrill sanitarium in Santa Monica. According to her death certificate the thirty-three year old actress had been a chronic alcoholic since 1932. She also suffered from pellagra which is a disease caused by a lack of the vitamin niacin. Her body was cremated and a small funeral was held. Some of Thelma's relatives from Emporia attended the service. Unfortunately her husband Johnny Sinclair did not keep her ashes or have them buried. Today Thelma's remains are at Forest Lawn Memorial Park in Glendale, California. They are being kept in a storage closet in the Great Mausoleum so Thelma has no grave marker.
Thelma's ashes are here