Madeline Kenner, also known as Maddie, is Katie Bowman's younger sister. She has a husband, Rob, and a son, Hudson.

At the time of The Arrival Maddie lost contact with Rob, who was flying to New York when an EMP pulse disabled transport and communications. She and Rob knew George before The Arrival.

Following The Arrival, Maddie and Hudson moved into the Bowman's converted garage. Maddie found work as a waitress. but still relied on Katie & Will to provide for her and Hudson. Hudson has diabetes, and insulin to treat diabetes is not generally available under The Occupation. Maddie is willing to do whatever she needs to in order to protect and care for her son.

Before The Arrival, Maddie owned an art gallery. During the occupation she used her connections in the art world to help climb the social ladder and find employment in the Green Zone.

Maddie began an affair with her employer's husband, Nolan Burgess. She and Hudson later moved in with Nolan after two of them conspired to have his wife, Charlotte Burgess detained for misappropriating artwork.