Jabe

Jabe was a representative of the Forest of Cheem who had come to see the destruction of Earth in 5,000,000,000. Upon meeting the Doctor, she took an immediate interest in him, and, after discovering his true heritage, felt grief at the loss of an entire species, with he as the only survivor.

When Platform One came under attack, she sacrificed her life valiantly, staying behind to allow the Doctor to fix the sun filters. She burnt to death under the immense heat. (DW: The End of the World)