DW and I have a 3yr old DD - she's not 4 for a few months yet.
We recently went for a Christmas party at one of DW's colleagues houses.
Our DD played all night with the colleagues DD who is several years older. As we were leaving, the colleagues commented on how nicely the girls had played together and said that our daughter should come for a sleepover sometime. They live on a huge farm in the middle of nowhere with extended family all living in the main farmhouse and in other homes within the grounds.
I didn't say anything, but DW said that would be really nice and they spoke about some potential dates in the new year.
In the car on the way home, I said that there's absolutely no way DD would be sleeping over there. She doesn't know this family at all, and DW doesn't even know them that well. DD has never slept over anywhere before (we live away from extended family)
DW thinks I'm being overprotective and it would be fine. I'm not comfortable at all.
AIBU to put my foot down?