Steffi Ehrlich

Steffie Ehrlich, a German astronaut, was a member of Bowie Base One. In 2059, The Flood invaded the base, planning to take over the population of Earth. She was separated from the rest of the group by falling water and she became trapped. She was infected with The Flood after the water was able to get through into the room she had sealed herself in. The infected physical form of Steffie was killed in the nuclear explosion set off by Adelaide, although her mental self may have been killed when she was infected (DW: The Waters of Mars)