Like someone else mentioned if these 2 become good friends, then there could be play dates/dinners/parties/get togethers/etc. I really don’t want it to get that far. The problem is that she keeps asking to go to her home."The rule" is someone is supposed to quote the first post just in case the OP comes back and makes material changes. It comes in handy sometimes, especially with controversial topics.
Regarding the actual substance, aside from the confederate flag, I wouldn't know what the other flags are regarding. That being said, I totally get not letting your child play over there. However, what about having the other girl meet at a playground or come to your house? Before everyone gets all up in arms, these kids are pre-K. Wouldn't it be good for the other girl to learn that those different than them aren't that different after all (ok, that sentence makes sense in my head)?
It is sad though. Meeting the wife, you would Have never known what the husband was up to. Maybe the wife has no choice but to deal with that mess.