I am new to mumsnet. I have this conundrum re my 13yr old girl wanting to got o a sleepover at her friend's house (boy) with 2 of her girlfriends and 2 other boys. I do not know the family well and have only spoken to mum once! I know they are all mates and I do not suspect anything untoward as she tells me it is 'yuck' but am concerned where it all ends up eventually!