Nothing is known about the life of Stephanie and the other residents of the community prior to or as the outbreak began. It is unknown if any of the residents knew each other before the outbreak occurred.
Post-Apocalypse
At some point a community in Charleston, West Virginia was set up for survivors of the outbreak.
When Eugene asks Stephanie about her community, she states she isn't comfortable with sharing any information about it, worrying she could put her group at risk of a potential threat.
During a conversation, Stephanie asks how many comets Eugene has spotted, to which he replies four. Stephanie is slightly peeved that Eugene is in the lead, and warns that he "better not be counting satellites", revealing that she saw one falling recently. Eugene realizes that the satellite she observed is the same one that crashed near Oceanside at roughly the same time, leading Stephanie conclude that their groups are located relatively close to each other. Excited to learn this fact, Eugene reveals that his group is located in Virginia and proposes a face-to-face meeting, allowing Stephanie to choose the time and location. Stephanie reluctantly agrees to talk to her people, but asks Eugene not to do the same. Eugene promises to keep quiet.
After being spooked by an unknown person and ignoring Eugene's calls, the two share a heart-to-heart causing Stephanie to abruptly blurt out the location of her group (Charleston, West Virginia). The duo set up a location and time of their future meeting, which Eugene accepts.
The Commonwealth Army appears at the Southern Train Yard where Eugene, Ezekiel, Yumiko, and Juanita are waiting for Stephanie. They rush in pointing their weapons at them, demanding them to put their hands in the air and drop their weapons. The group is both in shock and worried.