We allow our oldest two girls to read them. (6 and 8) They aren’t high lit, but I think what they learn in content makes up for it. I’m constantly surprised at what they retain from those books. This being said, our kids read ALOT, so these are sort of “filler” books. We have plenty of great literature they read but, to be honest, I have a hard time keeping up with them. So we allow some books I wouldn’t allow if they weren’t reading a lot of good stuff as well.
We had a great discussion about WW2 the other day spurred by one of these books. We talked about Israel, the atomic bomb debate, etc. It was a great introduction to the evils of the world dealt with in the confines of their safe home.
I want to add that my middle daughter did call her sister a pest and had heard that term from an Am Girl book. I used it as an opportunity to explain we don’t always repeat what we read and not all book characters are to be emulated. ( Just like people in real life.)
We are very conservative in exposing our girls to things and find the good in these books to outweigh the bad. So far.