Explain how corrie saw fathers train ticket analogy in action

One rainy Friday morning in January, Corrie tests Jans blood sugar and finds the fatal black liquid. After Corrie tells the family, they assemble to break the news to Bep. Father ten Boom tells Jans that she must embark on a joyous journey, but because of her writing, clubs and fundraising, she does not have to go empty-handed to God. Jans begins to cry, saying that we cannot bring anything and must come to God empty-handed because he took care of everything on the cross. Corrie remembers her father’s train ticket lesson as the family embraces Jans.