According to Wallace, the girls had long had an agreement that if one died, the other must begin to speak and live a normal life. During their stay in the hospital, they began to believe that it was necessary for one twin to die, and after much discussion, Jennifer agreed to be the sacrifice.[3] Within hours after their release in 1993, Jennifer died of sudden inflammation of the heart (reported initially as viral myocarditis).[4] There was no evidence of drugs or poison in her system. To this day, Jennifer's death remains a mystery.[5]
After Jennifer's death, June gave interviews with Harper's Bazaar and The Guardian.[6] She became more communicative and was able to speak with other people. She lived at home with her family in Haverfordwest apparently until 2005, when she began living with her partner in a nearby town.