My 9yo went to her first sleepover party this weekend and came back quite stressed out about some of the games that were played when some of the girls couldn't get to sleep. After a lot of gentle but insistent coaxing she told us that someone instigated a game of "gay chicken" set up like spin the bottle, with maximum time limits of 1-2 minutes imposed. She described the girls as rolling/hugging on their mattresses when it was their turn, no kissing or inappropriate touching. She said luckily the bottle hardly chose her, but when it did she was "too chicken to be chicken".
She also described the other girls as pulling down their pants and shorts to expose themselves to each other, though trying to understand this a bit better it sounds like they were only sort of mooning each other and she didn't participate.
Her close friend who attended slept through these games, and she didn't know how to get the games to stop. We've talked through some options to exempt herself from similar situations in future and praised her for telling us. She is really uncomfortable and upset and we've told her that this is her body telling her that this is a red flag situation and it's really important to listen to it.
This is all new territory for us. Is there anything else we should be saying or doing? The kids involved are mostly from school and there are a number of school residentials coming up in Year 5 so I wonder if similar things will come up again.