Dear Amy: This week, I discovered that my intelligent, hard-working, responsible 24-year-old daughter (who lives with me) is a gun owner! And it’s not a normal gun, either — it is a 40-caliber semi-automatic, and she has hollow-point bullets to go with it. Amy, this is the kind of weapon a criminal would possess! She says it is for emergencies. There have only been two home invasions in our neighborhood in the last 11 years. I’ve given her three choices: She can either give her weapon to me, sell it or move out in three weeks. I love my daughter...