Here in America, that’s considered upper middle class. Being a much newer country, we don’t really have much of the upper class that Europe does. Perhaps my previous nonny is American too?
AJ seems to be upper middle class too, like OP and BC himself. She’s worked as a high-end modern furniture and jewelry designer. Her clientele in London was rather posh. She was pretty and elegant but a bit bland, still a lot better than SH though.