Darabi, who was due to be executed on April 20, was sentenced to death for a murder she allegedly committed at the age of 17.
Darabi's lawyer, Abdolsamad Khoramshahi, said the victim's family has refused to attend the execution by hanging. Iranian law requires that the verdict be carried out only in the presence of the victim's family, resulting in the postponement.
Khoramshahi said the victim's family has not changed its demand for the execution.