Lieutenant Rebekah Grabowski was a female Human Starfleet officer assigned to the USS Enterprise-D in the 24th century. She was one of eighteen taken by the Borg in the first encounter the Federation ever had with them. She had a husband and a daughter on board. (TNG novel: Q & A)
Due to a genetic mutation, she was able to access Unimatrix Zero. She later joined up with the ex-Borg Hugh's contingent, serving on board his ship, the Liberator, where she once more met with Captain Jean-Luc Picard (her former commanding officer before assimilation) on the USS Enterprise-E during the conflict between that ship and the assimilated Einstein. (TNG novel: Greater Than the Sum)