|Place of origin:||Earth|
|First seen in:||Father Time|
|Other appearances:||PROSE: The Adventuress of Henrietta Street, COMIC: Political Animals, Bêtes Noires & Dark Horses|
As a girl, she was called Isobel, and she assisted Snaddon in caring for George III's royal menagerie. When Mother Francesca of Faction Paradox caught her eavesdropping on a conversation about the War, she helped her to ride the King's woolly mammoth. (COMIC: Political Animals) After Mayakatula escaped her cell, Isobel confronted her in a church, and Mayakatula taught her the ways of the Mayakai. (COMIC: Bêtes Noires & Dark Horses)
One of a group who had "inherited" the knowledge of the mysterious elementals following their destruction, Scarlette aided the Eighth Doctor in coordinating a defence against a new danger from outside the conscious universe, the two actually falling in love to a certain degree over the course of their time together.
Scarlette died shortly after her wedding to the Doctor, in a ceremony that was originally arranged simply to symbolically bind the Doctor to Earth and allow him to participate in its defence, but which, it was implied, developed a deeper meaning for both parties.
According to records, Scarlette faked her death after the crisis was over, recognising that the Doctor's feelings for her would keep him on Earth when he needed to continue travelling to other worlds that would require his help. (PROSE: The Adventuress of Henrietta Street)