My young DD started Junior school (gone up from the infants), and so had some people she knew in her class and some who had originally been in other classes. Her and her other friend became friendly with a girl (lets call her X), that she'd never met before.
For a couple of weeks she came home talking about how she wanted to play with X. I said that would be fine, and asked my DD to ask X for her telephone number so I could call her parents to arrange something, or to tell X's Mum or Dad to give me a call to arrange something at our house. (I don't get to the school at either end of the day so never see them). My MIL does so I asked if she'd mention it to X's parents too, which she did.
My DD then came home saying that X's parents said that she could go and play there. Apparently X had said that her Dad had told her to tell my DD that they live in a pub, and that he (dad) would be working downstairs behind the bar and the girls would be perfectly safe playing upstairs on their own.
I've never met or spoken to the parents so asked my DD to give our telephone number to X for her mum/dad to call me. She did, but nothing ever happened. My DD kept being told by X that her mum and dad agreed that she could go and play, and kept asking why she wouldn't.
I agreed with my MIL that if anything were to come of it that MIL would go with my DD to X's house, so that there would be someone there with them whilst they played. I just wasn't comfortable with my DD going off to play with someone whose parents I had never even spoken to, and whom seemed very reluctant to talk to me, knowing that the kids would be playing on their own unsupervised. Essentially in a house on their own, as the upstairs of pubs have every room a house has, and so all of the hazards. Especially not via communication with a 7 year old and no contact at all with the parents.
Still not sure if it was me BU, but obviously I don't think so.