Linda McFly

Linda McFly is the sister of David and Marty McFly from the Back to the Future franchise. She is also George and Lorraine's middle child and only daughter.
In the original timeline, Linda was struggling in her personal life, including a lack of a job and a boyfriend. However, due to Marty traveling back in time to 1955, Linda changed like the rest of her family. She was more confident, like her father and mother, had a job at a boutique, gained attention from a plethora of boys and no longer wears glasses. During the events of the film, She was 19 years old and had already graduated from Hill Valley High School in 1984.
Linda McFly was portrayed by the late Wendie Jo Sperber.