DD is 13, in year 8. She's made a new friend who is coming to sleepover on Saturday. I've never met her or her parents before. They're meeting in town before walking to our house later so I won't see them at drop off. Do I just let the girls get on with it? I'm so used to how things are in primary school where you know all the mums, this is new territory for me. Do I get the mums number from DD just so I can confirm and give her our address for Sunday pickup or just leave them to organise it themselves?