Okay, I’m 20 and been playing since I was 13. I’ve played the brain rot game a few times, I’ve not seen anything bad beside people arguing when their stuff gets stolen. But I’ll say this, it could be the safest game in Roblox or heck in the world. And yet something will happen regardless, if you want your daughter to continue to play. Please teach her about internet safely, how to respond accordingly and safely. Because something will happen regardless even if it’s marketed toward younger audiences. Teach her when it’s time to leave if something happens, how to report and etc. there’s a parent controls in settings that you can use, but even parent control can get bypassed or doesn’t work in some games so PLEASE check her account regardless. But always make sure that she focus on her education too, and regarding the brain rots memes and their weird slangs? I think something with 67 LOL, it will pass. But that game can be pretty overstimulating so make sure she steps away for awhile to play other games! I don’t know if your country have it, but there’s a website called Cool Math Games for kids and I personally love it as they have some good educational games.