The Baroness was a member of the Cobra upper echelon for over a decade, all while being in a romantic relationship with Cobra's weapon supplier and sometimes rival, Destro. Eventually, they married in secret.
When the world went to the undead, she stayed by his side. Together they are Laird and Lady, protectors of the Scots. They rule over the safe zones. She has no fear of living or undead, including her former boss, Cobra Commander.