Authorities said they were investigating her death as a drug overdose.
Sawyer appeared on MTV's "Catfish" in 2013 with Michael Fortunato whom she had been communicating with online for seven years.
The Hollywood Reporter said the cause is believed to be a blood clot in his ankle.
Former "Survivor" contestant Caleb Bankston died while working on a coal train near Birmingham, Alabama, on June 24, 2014, a railway official confirmed to CNN.
Shain Gandee of MTV's "Buckwild" was found dead in April 2013 in Kanawha County, West Virginia, authorities said.