Although she had no speaking role in the anime, Febronia does have an important role to play in the saga.
A servant of the Uzuki family, she was Shion Uzuki's nanny while the family stayed on Old Miltia. She was also a church leader near U-TIC's headquarters on the planet, and it was rumored that her 'sisters' Cathe and Cecily were part of keeping the original Zohar in power. Febronia was destroyed by other Realians during the Miltian Conflict (where Shion's mother and father were killed), which was witnessed by Lt. Louis Virgil, the incident possibly contributing to his hatred of Realians. Some of Febronia's organs were cannibalized, some of which had saved Virgil from DME addiction.(Source: Absolute Anime)