"How dare you do that! She had not written in those books. I had written in those books."The last exchange was repeated ad nauseam.
"I'm sorry. We weren't to know that you were at fault and not her. Please could you remember not to do it again."
"But I always write in books."
"Please don't write in our books."
"I shall. I always write in books."
"But these aren't your to write in."
It's no wonder modern youth has so little respect for other people's property.