They had a pen each and one writing pad. Instead of talking to each other they were placing combined efforts to write a story together : sentence by sentence. The story started with a heading,'Once upon a time....."
One of the young girls would start the story with a sentence and placed the writing pad on the other girls lap and the second young girl would then carry on with another sentence. Apparently, the story would not and as they read each others sentence they giggled or laughed and kept on writing. When I left the train they were continuing on the second page and said they have never done it before.
They came from Tangara School for Girls, Cherrybrook and advised they don't normally catch the train and enjoy want they were doing .
Good on them!