Lotta worked as a farmer on Solo, and evacuated to the second Sixth Civilisation site onboard the Ideon when the planet was attacked. Her parents weren't so lucky, dying in New Lopia. Lotta's practical skills were very helpful onboard the Solo Ship - along with Lin and the kids, she kept the livestock healthy and grew crops in the forest dome.
The loss of her parents and neighbours weighed heavily on Lotta, despite her outward calm. She suddenly snapped at one point and attempted to kill Karala for revenge. Ultimately she failed, and eventually stopped blaming Karala for the Buff Clan's actions. She even showed concern for Karala when she began experiencing pregnancy, and despite realising this kept it a secret until Karala was ready to let other crew members know.
When Karala's pregnancy was finally revealed, Lotta was one of those who volunteered to protect her inside the forest. When Harulu made a personal attempt on Karala's life, Lotta was able to kill one of her soldiers, Torolof, but was then shot herself by Harulu and Kilarul.