|Family||George (older brother)|
|Debut||George’s Forced Labour|
|Last Appearance||Pyjama Party|
"I only want George to do well so he could stay home and take care of me."
— Betty to Sally
Betty is George's little sister and Sally and Doowee's classmate. She was the one blackmailing her brother to make sure he kept doing his school work after feeling abandoned by him. She befriended Erna shortly after revealing the truth.
Betty is a very shy girl who keeps to herself and struggles socially. She is very dependant on her brother and while he cares about her, she is well-aware of the distance put between them due to his growing popularity. She adores him above all else as her only friend.
She hates to be alone and does try to search for friends after some help from Sally, but she is often inspired by adults and other students so she tries various hobbies.
Betty is a pale skinned girl with bright brown eyes and long steel colored hair. Her bangs are brushed back, combining into her long forelocks. She has a split cowlick.
She is depicted in a yellow pullover with brown accenting, a green and yellow plaid skirt, brown bracelet, and white stockings accent in brown and green with her brown shoes.
In official art she was shown wearing a blue set of pajamas with star print and light-colored slippers.