How do I deal with so-called best friends who want my dd to lie to us about her whereabouts (and other things), travel unaccompanied in taxis, plus spend the day in shopping centres, again unaccompanied. She is only 12 and we live in London. A lot of pressure is exerted! Do you think it's unreasonable to be against these things? The teenage years are yet to come and we want to get off on the right track...