Joyce was born in Puerto Rico. When she was six, she moved to New York with her parents before moving with them to Philadelphia five years later. Around 1980 she married Robert. They had a son named Oscar.
In February 1981, she contacted Philip and Elizabeth for help after Robert disappeared. She then discovered her husband led a double life. She was told by the KGB that she would go to Cuba, but instead she was killed by them, and her infant son sent to live with Rob's parents in Donetsk, Ukraine.