I'm a single parent and have to go to an evening at one of my DD's schools this week. It would involve being a 20min drive away and out from 6pm to 9pm. We live in a village, they know the neighbours, they can call my parents or their dad on the phone but neither are local. They are 10 and very nearly 12. They are generally sensible and have been left before but not for as long as 3 hours and not when it's dark, which it will be by 9pm. They want to be left rather than get a babysitter. WIBU to leave them?