Amanda was portrayed by Jane Wyatt in Star Trek: TOS and by Winona Ryder in J.J. Abrams' 2009 Star Trek film.
In the prime Star Trek universe, Amanda died in the year 2311 at the great old age of 109. However, in the alternate reality established in J.J. Abrams' reboot, Amanda's life was tragically cut short in the year 2258 when the mad Romulan terrorist Nero launched an attack on Vulcan. After drilling a shaft down into the planet's core, Nero deployed a red matter bomb that created a black hole within the planet itself. Spock attempted to evacuate his parents and the Vulcan Elders as the planet began to implode, but as the Enterprise's transporters were energising, the rocky ledge that Amanda stood upon collapsed and she fell. The transporter lock was broken and Amanda plunged to her doom.