You may be looking for the "daughter" of Aubrey Prior.

Vanessa was the aunt of Tegan Jovanka. Tegan was sent by her father to live with Vanessa when she was a teenager after she ran away from her mother's in Sydney. (PROSE: The King of Terror)

She often told Tegan to keep her mouth shut if she had nothing nice to say (AUDIO: Psychodrome) and told her to stop being an air stewardess should it stop being fun. (TV: Resurrection of the Daleks) She was fond of saying "bog off" (AUDIO: Heroes of Sontar) and kept Japanese knotweed in her garden. (AUDIO: Aquitaine)

She was driving Tegan to Heathrow Airport on 28 February 1981 when the car had a flat tyre. Whilst Tegan went for help, Vanessa was killed by the Master with his Tissue Compression Eliminator after she entered his TARDIS thinking it was an actual police box. Her last words were "oh, my..." followed by screams. (TV: Logopolis) Joy found it difficult to cope after Vanessa died. (PROSE: Divided Loyalties)

The presence of a photograph of her "Auntie" Vanessa in her cabin on Striker's yacht alerted Tegan that her hosts had been reading her mind and using that information to make her cabin more homely and comfortable, a clue to their true nature as Eternals. (TV: Enlightenment)

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