Physical Appearance Edit
She had dark red hair and green eyes.
She was descended from two Naval families - the O'Daleys and the Longs - and was a cousin of the current Duke of Winterfall. (HH15) Her family was extremely wealthy even for Manticoran standards. They owned the O'Daley Vineyards on Gryphon since c1620 PD. (SI2) Her parents gifted her with a townhouse, Three Oaks, on her marriage.
As the captain's wife, Sinead was the head of the Hexapuma Support Group, liaising between the families of the ship's crew and the Navy, and arranged gatherings for the ship's dependents. She continued in this role even after her husband was promoted as there were no other officer's spouse senior enough to fulfill the duties required.