I’ve come across a few children’s books in which adult female characters are married but kept their birth names. But not very many, and it’s never anyone’s mother. If the main character is “Rosie Jones” and her parents are married, her mother will be Mrs. Jones. Maybe one time in a thousand it’ll be Mrs. Smith-Jones. If she’s married to Rosie’s stepfather, “Bob Nelson,” she’ll be Mrs. Nelson. But she’s never Ms. Smith. The same always goes for “Rosie’s” friends’ mothers.
If a woman in a children’s book didn’t change her name, it’s probably the feminist teacher in a chapter book for older kids.
I find it bizarre that no one’s mother ever seems to keep their birth name in kids’ books. Can anyone think of a book in which that happens?