She is seen early in the film belittling Alex for his average grades. She explains to him that he won't be able to go to medical school with his current GPA and that he should consider other options such as a fry cook.
She later discover's that Alex is suddenly on the honor roll. She comes to the assumption that Alex has hacked the school's system and changed his grades. She leaves her office to go resolve the issue. However, she is stopped by Mary Lou who kills her by locking her in a hair salon chair and drenching her in battery acid.
Ms.Richards' body is later discovered by Alex and then buried in the football field where it is found later along with the other bodies.