The original story had K'Ehleyr being the product of a Vulcan mother and a Klingon father, but the editors felt that was too unrealistic.
Although K'Ehleyr (Suzie Plakson) only appeared in two episodes, her character has proven to be a fan favorite. Her other episode was Reunion (1990).
Footage of the Klingon battle cruiser is reused from Star Trek: The Motion Picture (1979) with added disruptor and cloaking device effects.
When K'Ehleyr goes to the Holodeck, the programs she pulls up are: "Scuba Diving, Hanauma Bay Earth", "Klingon Rite of Ascension Chamber", "Calisthenics - Lt. Worf", "Shi-Kar Desert Survival, Vulcan", "Carnival Celebration - Rio De Janiro, Earth", "Racetrack, Longchamps, France, Earth", "Dixon Hill in 'The Long Dark Tunnel'", and "Dixon Hill in 'The Black Orchid'".