|Everyone must've escaped! It means nobody here was eaten. Including your family, too.|
|— Lynne comforts Conny|
Lynne had long, brown, messy hair that she kept in a ponytail with her bangs parted down the middle. She wore the traditional uniform of the Scout Regiment with a white shirt underneath.
Lynne was serious about her job, but considered the feelings of the people around her. While she was serious about her mission and objectives, she took the time to make Conny Springer feel better about the seemingly hopeless situation in his hometown by convincing him that everyone escaped without being eaten by Titans when Wall Rose was supposedly breached.
Lynne is one of several soldiers including Gelgar, Henning, Tomas, and Nanaba brought by Miche Zacharius to oversee a group of potentially untrustworthy Scout Regiment members. The group was assembled close outside of Wall Sina and disarmed of their weapons due to the suspicion that one of them might be an accomplice to Annie Leonhart.
Lynne comforts Conny Springer when he fears his family had been eaten by Titans while they investigate his hometown, saying they probably all escaped due to the lack of blood and bodies. The squad rejoins with Nanaba and Henning's squad after failing to find any breach in Wall Rose. As night falls, the two groups take refuge in Utgard Castle.
Utgard Castle soon comes under attack from numerous Titans capable of moving during the night. Since the soldiers who had been under suspicion do not have omni-directional mobility gear, the only ones able to directly engage the Titans are Lynne, Gelgar, Henning, and Nanaba. However, when Lynne and Henning separate from Gelgar and Nanaba to check on the rookies within the castle, they are both struck by a projectile thrown by the Beast Titan and killed instantly.