Why does Jaimito tell Dede to stop yelling as they drive through the streets with the bodies of her sisters in the book "In the Time of the Butterflies"?
It's in the Epilogue & Postscript section.
Jaimito tells Dede to stop yelling because he is afraid that she will bring down the anger and reprisal of the SIM upon herself. He does not want what happened to her sisters to happen to her.
Dede stays in the back of the pickup truck with the bodies of her sisters and their driver as Jaimito drives them home through the towns slowly, "standing proud beside them, holding on to the coffins whenever (they) hit a bump". When they arrive at the SIM post at the first little town, Dede challenges them, yelling out, "Assassins! Assassins!", and Jaimito guns the engine to drown out her cries. When Dede repeats her actions at the next town, Jaimito, afraid that the SIM will hear and arrest Dede or worse, pulls over and speaks with her, asking, "Dede, mujer, what is it you want - to get yourself killed too?" Distraught, Dede affirms that that is exactly what she wants, she wants to be with her sisters. Jaimito responds that her martyrdom must be different, "to be alive without them" (Epilogue).