Role in the film
Sara is first seen outside of Medfield College. She tells Philip that their wedding is today and also tells him to be there tonight as he promises.
However, Philip is too busy doing his latest experiment which makes he break the promise to Sara, and she becomes heartbroken after he discovers a green goo-like thing called Flubber and studies it along with his hovering robot assistant, Weebo, for the entire night.
That morning, she became really upset at Philip for not showing up at the third wedding and tells him that their relationship is over. As he tests his car with the Flubber experiment, he realizes that his old assistant, Wilson Croft, begins a relationship with her.
Weebo tells Philip to tell her the truth. After he begins another test using the effects of Flubber on a basketball, he uses the fluid and sprays it on one of the basketball player's shoes and tests it out. Weebo goes to Sara's house to tell her the truth as she reconciles with Philip.
Philip begins to demonstrate Flubber's abilities to Sara. After Wilson's assistants, Bennett and Chester Hoenicker, destroy Philip's lab, steal Flubber, and destroy Weebo with a baseball bat.
She and Philip avenge Weebo's death and retrieve Flubber to battle Wilson, Bennett, and Hoenicker.
After she and Philip get Flubber back and raise enough money to save the college, they are married as Flubber becomes their son and Weebo's daughter, Weebette, takes her place as their daughter as they head to Hawaii in Philip's car at the end of the film.