She was named Amélie Eugénie Thérèse Caroline de Tascher de la Pagerie. Her father was Charles de Tascher de la Pagerie, a son of Pierre Claude Louis Robert Tascher de la Pagerie with Amélie princesse de Leyen. Pierre Claude Louis Robert was proclaimed count of the empire before his marriage with Amélie de Leyen. The main reason for this was he was a son of a paternal uncle of empress Josephine, Robert Marguerite Tascher de la Pagerie.
So, empress Josephine was a first cousin of Pierre Claude Louis Robert, the paternal grandfather of your Eugénie

The mother of Eugénie was a french noblewoman, Caroline, baroness Pergier de Perglas. Charles de Tascher de la Pagerie and Caroline were settled in Munich, Bavaria, after the fall of the empire. Maybe -I don´t know...- they found some protection from Eugène de Beauharnais, duke of Leuchtenberg, the son of Josephine. Your Eugénie, and her sister Hortense (full name: Hortense Stéphanie Anne Sophie Friédérique), were born in Munich.
And I can´t give you more info...
