my friend went back to work just before the summer holidays and she let her then 7 year old walk home from school and her elder sister would meet her at home but now the elder one has to stay at school late and can't meet her.
the mum can get home about 45 mins after her dd2 would get home.
i've said i think it would be ok to leave her on her own for that short amount of time and she is 90% sure of it but her husband won't even entertain the idea.