The immigrant from Guatemala was found dead inside apartment in Telford, Pennsylvania on March 15, about a week after being reported missing.
Authorities have ruled her death a homicide.
RELATED: Death of 23-year-old woman in Bucks County is being investigated as a homicide
Friends of Popol believe it was domestic violence situation.
Community members gathered on Sunday near the scene to remember her life.
Investigators have not released details about how she died or identified a suspect.
Family members say they were unfamiliar with her boyfriend and have been unable to contact him.