When Emma was young, her parents would always move from town to town, which left Emma friendless. Until she had an imaginary friend named Teddy, who took the form of a stuffed teddy bear. However after her parents settled in Doorchester, Emma befriended three girls, one of them named Debby Clark, with her new friends Emma decided to put away Teddy for good, But when they went to high school, Debby joined the soccer team and spent less time with Emma, causing her to be alone again.
After playing a single game of tennis by herself, Emma is reunited with Teddy, who granted her wish for everything to be just like before, which he did by capturing Debby and the others and turning them into small plush toys, where Emma put them in a the same Toy Box she placed Teddy in.
At first she liked the idea of her friends back together with her as plush toys but then realized that she didn't want to have friend that way and wanted Teddy to change them back, unfortunately for her Teddy refused and attempted to turn her into a plush toy as well, luckily Martin, Java and Diana arrived just in time to save her, but instead Diana was turned into a plush toy. After hiding in another room and Emma explaining her backstory, Martin discovered that Teddy was brought back because Emma's old friends left her alone.
The only way for him to be gone for good is for her to make new friends, which she wondered how could she make new friends if she is trapped in another room with Teddy trying to break in, then realized that Martin & Java could be her new friends, but since she is rusty in making friends Martin came up with the idea of them play musical chairs, in which after she beat Martin and made friends with both of them, caused the toy box to suck all the Childhood momentum Teddy brought, But when Teddy refuse to go back, Emma used her tennis racket and sent Teddy back into the box, disappearing forever and transform Diana, Debby and the others back to their human forms, in which after she apologized, Debby agreed to start over and befriend Emma again.
- Emma is one of the few high school girls in the series not to wear lipstick as her lips are shown to be plain.
- In a psychological view in the show, Emma is a representation of older teens or young adults who wish to relive their young lives that make them happy.