A love that lasts- Diane Sherman x !Fem! reader

Y/n is going into her final year at school. She has been struggling for years with her appearance and other mental health issues... Her mum left her when she was born and therefore has never met her, so she lives with her dad, step-mum, half-sister and half- brother. She has always struggled with feeling loved and cared for, but what happens when Y/n gets a new English teacher in school... will things change for the better or worse?
(This does not follow the storyline of Run and Diane is not psychotic in this FF, however she will have her own twist on her story)
⚠Homophobia, anxiety, self-harm, eating disorders, suicidal thoughts and other triggering topics. I will put a trigger warning at the start of each chapter and possibly throughout as well.
I DO NOT OWN THE CHARACTERS OF DIANE!! They are from the rightful creators of Run