Madeline Reed was a Human of British descent, the daughter of Stuart and Mary Reed. She also had a brother named Malcolm Reed who served in Starfleet.
In 2151, she was contacted by Ensign Hoshi Sato who was trying to find out what Reed's favorite food was in order to surprise him at his birthday party. Madeline was unable to help. (ENT: "Silent Enemy")
Madeline was played by actress Paula Malcomson.
Her name comes from the script.
In the final draft script of "Silent Enemy", Madeline Reed is described as "late 20's, British, pretty and energetic."