Jennifer Parker is Marty McFly’s girlfriend in the Back to the Future trilogy. She doesn’t have a lot of screen time but she is an important character as she’s the eventual person he marries in the future.
Because of family reasons, Claudia Wells had to drop out of the second and third movie. So Elisabeth Shue replaced her and I think she did a good job.
I will say, Marty McFly might be the worst boyfriend in the world. He’s constantly left her in very dangerous situations.
She does get a chance to see her family in semi ruin in 2015. But luckily, Marty knows what to do to avoid such a mediocre life and does.