Pre-Outbreak[]
Nothing is known about Kate's life before the outbreak, except that she lived in somewhere in Manhattan, New York and served as a SWAT officer.
Post-Outbreak[]
Season 3
"Bad White"[]
In this episode, Kate is seen talking to Fet about the vampires. After they finished their drinks, they went to a hotel and had sex. Once it was morning, Fet kissed her goodbye as he left.
As of the end of season 3, her status is unknown. It is possible that she fled along with the other officers.