Betty Buckley played Carrie's imaginary friend, Margaret White.
She played gym teacher Ms. Collins in the 1976 Brian de Palma film Carrie and went on to star in the short-lived Broadway musical version of Carrie in 1988 , this time playing Carrie 's mother , Margaret White .
Betty Buckley
played
Carrie's imaginary friend, Margaret White
Carrie 's mother , Margaret White