Stewart was a co-hostess on two 1970s game shows, Gambit with Wink Martindale and the nighttime edition of High Rollers with Alex Trebek,  both produced by her husband, Merrill Heatter.
Stewart served as a co-presenter on two popular 1970s game shows, Gambit alongside Wink Martindale and the late-night version of High Rollers with Alex Trebek, which was created by her spouse, Merrill Heatter.