Prior to the events of October 7, 2013, Kate attended a Vortex Club party where she became intoxicated. When a video of her actions during her intoxication was uploaded online via YouTube, news of eventually reached her family. Whether or not Kate's sisters, specifically Lynn, were made aware of the video, is never explicitly revealed.
When Max is in Kate's dorm room and she finds two photographs of Kate with her family. Sitting on the shelf of her table is a picture of a Kate with her sisters, Lynn and Kate at the forefront, while the other sister stands behind them eating ice cream. Max realizes that she hasn't seen Kate smile in a while because of the picture with her sisters. Sitting off in a corner on a shelf is a picture of Kate with her sisters and parents. Max calls them "the all American Zombie family" based on the mood of the photograph.
When Kate attempts to commit suicide on the girls dormitory rooftop, Max may mention her sisters as a way to bring her down from the ledge. Kate acknowledges that killing herself would made Lynn sad after Max tries to convince her that her sisters wouldn't want her to kill herself.
- Kate's sisters and her father are two optional dialog choices that are thought to be the deciding choices on whether or not Kate will attempt suicide.
- Max's dialog when referencing Kate's sisters may differ depending on whether or not the player looked at the photograph of Kate with her sisters.
- At the end of "Chrysalis" and "Out of Time", the name "Lynn" can be seen on the binder right before Rachel Amber's. Whether it refers to Lynn Marsh or another girl named Lynn is presently unknown.[note 2]