" there is no right or wrong." I think there is.
If there is no legal safe age to leave children then there is an assumption that parents would be there when inviting a guest to their home, surely? There would be, in my book, anyway.
Radio 4 did a very moving (and terrifying) episode of One to one with Trevor McDonald a while ago where he met a victim of rape spoke about coming to terms with what had happened to her when she was about 13. She had had a sleep over at her friend's home where no parents were involved. The two girls had got drunk, gone out and picked up two men, hat followed was so appalling I won't write about it here.
I am not linking to it, you can find it very easily if interested.
My point is the girl's parent did not know there would be no adult at the home in this situation either. There was no adult at the home all night , so it is different to the case here, but basically it does show quite extreme circumstances that can occur.
I know we cannot live our lives in fear of extreme circumstances but I don't think expecting 13 year olds to be supervised at night is a big ask.If this were my child would be livid and she would not be staying at this girl's house again. It is no reflection on the girl, it is a reflection on the parents. I think some parents are very naive and it is better to be safe than sorry.
At 16 I was mixing with bikers who took drugs, some were into the occult and my parents had no idea. I was smoking and drinking and stayed in a squat once when they thought I was with a friend, I was, in the squat! All I had to eat that night was a cuppa soup, but I was offered drink and drugs. I was 16 and thankfully no harm came to me, but I would shudder to think my child would be in similar circumstances. My friend had all kinds of ideas for a holiday we could go on with her boyfriend, who she was sleeping with at 14, and my parents were none the wiser because they knew her dad!
I was very lucky not to get into any real trouble but I think I did put myself in risky situations because I did not know any different and maybe did not want to look bad' in front of my more street wise friend.