DD is 12yo. She has arranged for a friend to come over today and she has just arrived. I need to walk the dog which will take about 45 minutes. Is it wrong to leave the two girls here alone for that length of time? DD is at home alone for short periods fairly regularly (i.e. She comes home from school and I'm often at work for a couple of hours. My 14yo is normally here too, but on occasions he has after school clubs or meeting friends so 12yo is here on her own etc) so I'm not worried about her, I just don't know what the done thing is when friends are involved. If it makes a difference I don't know the mum or have her number, the kids have sorted the meet up themselves. AIBU to take the dog out? Or should I leave it until the friend goes home?