Vanessa (Logopolis)

Vanessa Jovanka was the aunt of Tegan.

Biography
Vanessa was driving Tegan to Heathrow Airport when the car had a flat tyre. While Tegan went for help, Vanessa was killed by the Master with his Tissue Compression Eliminator. (DW: Logopolis).

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 homey and comfortable, a clue to their true nature as Eternals (DW: Enlightenment).

Vanessa once told Tegan to stop being a hostess when it stopped being fun. Tegan applied this notion, citing it when she departed the Doctor after her encounter with the Daleks. (DW: Resurrection of the Daleks)