Mrs. Barry is Diana's mother and has a reputation for being strict and unforgiving with her kids. She sets rigid rules and isn't shy about blaming Anne when things go wrong—most famously after Anne accidentally gets Diana drunk with raspberry cordial. The incident pretty much destroys any chance Anne has of seeing Diana for a while, until Anne manages to prove herself by saving Minnie May from a serious illness.
What fans often note is how harsh Mrs. Barry can be, especially toward Anne. She's quick to judge and slow to forgive, which makes her a natural obstacle to Anne and Diana's friendship in the early story.
The original book series never gives her a first name, and she goes unnamed in the 1979 anime as well. It wasn't until the 2025 anime adaptation that she was officially named Eliza.
Content compiled by AnimeList.moe from publicly available sources.