There is no such sexual material in the book. An innocent teenage girl asked a raunchy question to a friend she had a crush on because that's the kind of behavior teens display while they grow up and develop themselves. And she got shut down. Nothing graphical was ever shown. It's showing only what was written by that same normal girl disconnected and hidden from the world as they hide from murderous tyrannical nazi's. Raw and unfiltered thoughts and feelings of a normal developing teen, as the girl wrote it for herself, not us. As the Anne Frank Foundation said in the video "A book written by a 12 year old can be read by 12 year olds."