Since around October dd has been telling me that she’s going to sleepovers fairly regularly (around once every 3 weeks) and coming back the next morning very tired. I’ve always put this down to staying up with her friends but before this year she would not stay over at friends’ houses this often- she’d occasionally stay after a party or similar but she hasn’t had specific sleepovers in years. I was reading an article on whether there is a ‘rave renaissance’ occurring earlier this week and have not been able to shake the thought dd has been attending these events. She came back from one of these ‘sleepovers’ today and slept until around 3pm. What can I do short of tracking her?