I've got into such a stress and feel guilty now. 16 yr old DD just asked if 2 friends could spontaneously stay over (they're all out for the evening, we all live in the same city). She has quite often stayed with one of them before. I was just having a quiet evening and have a long work week next week, working from home tomorrow (they are on school holidays). I have said no but now feel mean because her friends do come here less (small flat) and more to her Dad's (large house), and now worried she will feel she can't bring friends here. It is just too short notice for me as I would feel I have to clean etc. AIBU to say no? Should I just not worry about saying no? She has accepted it fairly graciously but now I feel so bad.