(Capcom's primary storyline)
Nothing is really known about Emily nor her past except she was a former undercover agent for the Drug Enforcement Administration. Sometime before the incident, she has been doing recon on the Mojave Desert where she learns of Miranda's plan and informs the rest of the squad about it.
In Eastern Europe, she helps her captain Chris Redfield in infiltrating the Winters' home and eliminating Miranda who is under the guise of Mia Winters in an effort to steal the couple's daughter Rosemary Winters. Sometime later, she and other members of the team arrived at the overturn convoy with the escort men killed and Ethan and Rose nowhere to be found
Emily and her unit arrives at the crash site at 11:35 AM with no sighting of Ethan and Rose. In 12:10 PM, they infiltrated the Village and engages with numbers of different bioweapons, they found evidence of Ethan being in the Village but Rose's location remains unknown. In 13:10 PM, they established a base in the church and plans the operation with her, Dion Wilson and John Perlman search a laboratory nearby while the other two in charge with analyzing mold samples and their captain Chris heading to Heisenberg's Factory.
Sometime later, she and the others have eyes on Miranda at the ceremony site, they then report and take screenshots and sends it to him.
After Ethan Winters's supposed death, they are then regrouped to discuss the mission objective which is to terminate Miranda and rescue Rose, Chris then orders them to watch out and terminate any hostile B.O.W
After the destruction of the village caused by Ethan, Chris orders them to pick up the rest of their squad and plot a course to BSAA Europe HQ.