No, but that’s just because everyone wants to refer to themselves as “middle class” or at most “upper middle class”
Unless she wasn’t supposed to mention SES in that section, I don’t see the issue - unless you think she’s delusional about your family’s wealth (which odds are, she has a better grasp than you do).
Better to be privileged and acknowledge that one is privileged than to be privileged and try to pretend that one isn’t.