Harriet's parents say they "want to get to know her" now that Ole Golly is gone. Also a Tear Jerker in that they had no role in her upbringing before.
After Harriet's Extreme Mêlée Revenge that follows her parents confiscating her notebook, they finally get the memo that taking it away wasn't a good idea.
At night when said Melee plays out, which inconvenienced Harriet's mom who is a Trophy Wife, her mom still tucks her into bed when she falls asleep in her day clothes.
The child psychologist who examines Harriet makes note that she is brilliant, which is nice to notice since Harriet's Brutal Honesty makes her hard to like.
Harriet's mom offscreen calls Ole Golly to write a letter to Harriet, asking for a story and offering advice on how to handle the notebook situation.
They also arrange some Screw the Rules, I Have Money! to make Harriet junior editor of the school newspaper, so that she has a proper outlet and can focus on her work.
Sport and Janie forgiving Harriet at the end after she prints that everything in her notebook was lies.
1996 movie
When Ole Golly and Harriet reunite.
The Boy With the Purple Socks speaking up and nominating Harriet to be the new editor of the school newspaper.
2010 movie only
Beth standing up for Harriet and voting for her blog.