Revenge is Sweet Darling

Gwen Russett was just your average quiet brainiac girl who slowly and sadly gained a lot of weight through her junior years.
After moving to Denver, America with her parents when she was just 2 for her dad's company
Gwen knew she was different just from the way other kids looked at her.
Especially since she started a year earlier then them and was much larger.
She didn't make one friend from her preschool all the way through elementary.
And after a particularly bad first junior high year, bullied by the school's Queen B Genova, she hated herself and her school.
Luckily her dad's company sent them back to Australia for a 5 year contract so he could get the company going there again.
Gwen made friends, lost her junior weight and started to enjoy school again.
Nothing could stop her from being happier.
Until her dad was transferred back to Denver.
Gwen's nightmare was to be true, ripped away from her friends and home to return to her personal hell.
But Gwen's different, and no one remembers her.
So of course, she's sweet for revenge.