DD wants to go out with a group of 8 friends to Guildford on the train to go ice skating or something in the afternoon. I said no because it’s too far and I can’t pick her up if something goes wrong. She said that I’m being ridiculous since I barely let her go out around Croydon with her friends and that most parents are already letting their kids go up to London alone. AIBU? Should I let her go?