In 1955, she was present when Marty McFly had dinner with her family, but did not speak.
Note: The following section is considered non-canon or is disputed in canonicity.
By 1986, Sally had at least two children. When Marty McFly was investigating the circumstances of her brother Joey's arrest, she could not offer any useful information. She was present at Joey's prison release celebration on May 10.
Non-canon or disputable information ends here.
Behind the scenes
Sally was portrayed by actress Maia Brewton, who was 7 years old when the scene was filmed. In 1987, she co-starred with Elisabeth Shue (Jennifer of Part II and Part III) in the comedy Adventures in Babysitting (also known as A Night on the Town). She appeared on two episodes of The Wonder Years, which reunited her with her Back to the Future big brother, Jason Hervey, who portrayed Milton Baines.