A German woman fed the soldiers of the German arm of UNIT in 2009. She was aware of the Osterhagen Key and its purpose. When Martha Jones teleported to the German fort, she told Martha that the soldiers "went home to die". She threatened Martha with a Luger P08, asking her not to use the key. However, when Martha, calling her bluff, told her to shoot, she lowered her pistol and allowed Martha to continue her mission. Mercifully, the Key was rendered unnecessary thanks to the actions of the Tenth Doctor, who returned the Earth to her proper place. (TV: Journey's End)
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