Grace Holloway
Dr. Grace Holloway was a San Francisco cardiologist and ally of the Doctor.
Profile
Grace's hospital called her in to save the Doctor after his shooting in an alleyway. When the Doctor later regenerated into a new form, Grace at first refused to believe he was the same man, but gradually became convinced.
She was possessed for a short while by the Master, during which time she betrayed the Doctor. She later unwillingly opened the Eye of Harmony inside the TARDIS.
In the end she decided not to go with the Doctor. The Doctor departed in the TARDIS and each of them went their separate ways.
Grace expressed an interest in Puccini's operas and the art of da Vinci. She was also the live-in girlfriend of one Brian for a while, though he left him the same day she met the Eightth Doctor. (DW: Doctor Who: The TV Movie).
After their parting, Grace moved to Bel Air, where she worked as a surgeon for three years, before Torchwood offered her a position as a medical officer. Grace had never heard of the organisation and refused their request, thinking that the people had come to see her were kranks. She nearly turned down a job offer by UNIT to become a medical officer, until she found out that The Doctor(in his Ninth incarnation) had pulled some strings to get her appointed to this position. She moved to London to take up this post, whilst there she had a drunken fling with her assistant at the time, Owen Harper, which resulted in the birth of her daughter, but she never told him, and he died, never knowing he was a father. She left UNIT and moved to Scotland, where she took a job in a private clinic, and to bring up her daughter.