DD has just turned 18 (1st September). She is in her 2nd year of A-Levels. I have 2 younger DC (11 and 13) but DD has booked into a hotel with her best friend for 2 nights (they're going for a day out tomorrow - hotel tonight and next day). It's also pretty local. I feel a bit sad and like I've failed that she doesn't feel like she can bring her friend here. She has her own bedroom, so no one would disturb her. I'm probably being ridiculous but I can't help feeling like it's partly my fault.