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 Duke of Winterfell. (HH15) Her family was extremely wealthy even by Manticoran standards. They owned the O'Daley Vineyards on Gryphon since around 1620 PD. (SI2)
Sinead and Aivars were married in 1877 PD and went through all all the ups and downs of life together, including Terekhov's traumatic experiences during and after the Battle of Hyacinth. (SI1) Her parents gifted her with a townhouse, Three Oaks, upon 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. (SI4)