Short answers, pulled from the story.
Stéphanie Louise Adrienne de Beauharnais entered the world on the 28th of August 1789 at Versailles. This date marked the beginning of a violent upheaval that would reshape France and her family's future.
Napoleon adopted Stéphanie officially to secure an alliance with the Prince-elector of Baden through marriage between their descendants. He named her Princesse Française or French Princess to transform her from a distant relative into a key instrument of statecraft.
Her husband chose to continue living as a bachelor while establishing his residence in Karlsruhe and she settled separately in Mannheim. The Grand Duke offered Schwetzingen Palace as a shared summer home but only Stéphanie accepted this invitation for the estate.
Karl and Stéphanie had five children who shaped future royal lineages including Princess Luise Amelie Stephanie, an unnamed son born in September 1812, Princess Josephine Friederike Luise, Prince Alexander, and Princess Marie Amelie Elisabeth Karoline. These marriages connected the House of Baden to other European royal houses.
She died in Nice, France, on the 29th of January 1860 at age 71. Her legacy persisted through her descendants who held power across the continent for decades.