[2] Some of the writers she coached include Sonia Garmers, Richard Piternella, Frances Kelly, Josette Daal, Desiree Correa and Diana Lebacs.

In 1981, she won the Boekensleutel award together with Czech writer and poet Dagmar Hilarová for the book Ik heb geen naam.

[2] Between 1979 and 1982, Diepmann was also the head of the Dutch Section of the International Board on Books for Young People.

[2] For her book Dan ben je nergens meer she received the Nienke van Hichtum-prijs literary award in 1975 .

Her books featuring the characters Hannes and Kaatje have been described as a modern version of Jip and Janneke or Ot and Sien.

[3] Her books translated into English include De boten van Brakkeput (as The Haunted Island, 1959),[9] Gewoon een straatje (as Just a Street, 1963), Marijn bij de lorredraaiers (as Slave Doctor, 1970),[10] and Jossy wordt een Indiaan (as Indian Jossy, 1970).