Edith Crumpton was a scientist who worked for the Forge. (PROSE: Project: Valhalla) She used to work for Porton Down. (AUDIO: Project: Lazarus)
In 2004, she tried to contact Nimrod when an urgent message arrived. She was asked to induce the Sixth Doctor to regenerate.
In 2008, she stopped Nimrod's experiments to stop the creatures besieging them from entering the base. She had the Huldran portal and was trying to open it. (AUDIO: Project: Lazarus)