I reset the alarm, let myself out, and went to my car. I dumped the yearbooks and files onto the passenger seat, but didn't drive away. I thought about the gun. Amy might have had second thoughts. She might have decided it was too loud or too smelly or just wasn't fun. Maybe having a gun around the house made her feel less safe, so she got rid of it. There were plenty of innocent reasons her gun was missing, but guesses weren't facts. I