While she is known for her comedic performances, she didn't actually write much. She was primarily an actress and performer.
However, she did co-write a play called "The Belles of St. Trinians" with Ronald Jeans. This play became the basis for a successful series of films featuring a boarding school for girls.
She also wrote a memoir, "Life Begins at Eighty-Four," published in 1976. This book discussed her life and career in show business.
So, while Mabel Constanduros is not a prolific writer, she did contribute to the world of literature through her play and memoir.