More than two dozen people gathered on Thursday at Lake Ella in Tallahassee for a candlelight vigil in her honor.
The Tifton County Sheriff's Office says she has been missing since April 22 and was last seen at her home on Briarwood Lane in Tifton, Ga., which is about 90 miles from Tallahassee.
Her family told CBS affiliate WSWG that Blombergh had packed her belongings and planned to move back to Tallahassee the day she went missing.
The family created a group on Facebook to help spread the word about her disappearance.
Blombergh was born and raised in Tallahassee. She is about 5 feet 4 inches tall and weighs 135 pounds.
If anyone has information about Sunday Blombergh, please call the Tift County Sheriff's Office at (229) 388-6020.