Emily Fletcher was Maude Fletcher's daughter.
In 2004, Maude was leading a protest against Rechauffe (now renamed Mandrake Corp) at their Pangbourne Scientific Lab in Berkshire. Emily, who had just finished her computer science studies, was with her. The group had reason to believe that Mandrake was using animal experimentation in their attempts to perfect a cure for the Marberg virus, and set up camp just outside of the lab's gates.
When nothing seemed to progress for a few weeks, Emily and some of the other protesters broke into the lab, looking for evidence. Instead, they were caught and used as human subjects for perfecting a far more virulent strain of the virus. (AUDIO: Fatal Consequences)
The protesters were released while infected, in the hopes of starting a pandemic that would kill most of humanity, but Sarah Jane Smith and her friends succeeded in getting the cure to them before it could spread. Maude later recounted on a radio interview that some of the protesters did die from the virus, but her daughter Emily was recovering. (AUDIO: Dreamland)