My daughter, who is 12, is going on a school trip to Cologne. She leaves at 12.15 am (i.e. just after midnight tonight) and she is away until 6am Monday morning. I'm scared. She's been on overnight trips without me before, but not to another country. I have to let her go, because she wants to. But my imagination runs riot. She's sensible and courageous, but of course innocent about the world. I hope her teachers look after her well.