Willa Jean

Willa Jean is Howie's exasperating younger sister.

Relationship with Ramona
Willa Jean is actually liked by Ramona in Ramona the pest, while she doesn't like Howie, however past that Ramona switches and stops liking her. Willa Jean is known to do exasperating things, such as ruin checkers games by changing the rules. Ramona would do similar things when she was younger, but refuses to accept the fact. Ramona thinks of Willa as a "Pest", just as Beezus thinks the same of her.

Ages
Throughout the books, Willa Jean's age would change gradually.

Ramona the Pest: most likely two.

Ramona the Brave: most likely two and a half.

Ramona and her Father: most likely three.

Ramona and her Mother: most likely three and a half.

Ramona Quimby, Age 8: four.

Ramona Forever: most likely four and a half. Ramona's World: ''most likely 5, and at the end of the book 5 in a half.

Personality
As Ramona and Howie describe her, she's Howie's spoiled bratty sister, much to Howie's grandmother's dismay. Usually when Willa does something wrong, her grandma pretends like it's all Ramona's fault, much to her dismay. In the TV show, in Ramona's Flashback Willa Jean was seen sitting on what her uncle gave her, and Ramona seemed to be mad at Willa, and most likely jealous.