Who is Dede from In the Time of the Butterflies and what is their importance?

Bélgica Adela "Dedé" Mirabal-Reyes is the second oldest of the Mirabal sisters. She is also the only sister to survive the Trujillo regime. Dede married Jaimito, and the couple had three sons. Jaimito and Dede divorced in 1984.