DD1’s best friend is great in almost every way - very smart, can easily hold a level conversation on any topic with an adult (Brexit, Royal family, price of oil, war with Ukraine) - she’s 9. She’s very kind with DD1, no issues with their friendship. But - she comes to our place often and starts going through things. Not just in my daughter’s room, which would be fine. Through kitchen cabinets, through drawers in my room. Never asks if she wants to get something after dinner from the kitchen. It irks me and surprises me greatly; her parents are soft spoke, gentle and polite professionals, I can’t imagine, looking at them, that they’d encourage this behaviour at home. Is it just lack of manners or some sort of disorder? I’m not going to stop the friendship but wonder if I should say something sharp. I tried to make humorous remarks but she doesn’t get the hint. Would you be Ok with this behaviour?