Suggested as a resource at the start of the Marin missions, you meet her at Top-Notch shortly thereafter.
Rosa Rodriguez was a child when she and her father, Amelio, survived the Battle of Defiance and became recorded in history as members of the Defiant Few. Now she lives a secluded life in Marin where she operates Top-Notch Toolworks with her companion, Eren Niden. Rosa has grown up to be a hot-tempered, genius inventor who keeps Paradise rich with innovative solutions to the dangers of the new frontier.