Sentencing proceedings in the murder trial of former JoziFM DJ Donald Sebolai have been postponed to next year. The state started leading evidence in aggravation of sentence in the Johannesburg High Court sitting at the Palm Ridge Magistrate's Court‚ southeast of Johannesburg‚ on Wednesday‚ but the defence has put proceedings on hold.Sebolai‚ 38‚ was convicted in October of murdering his girlfriend Rachel "Dolly" Tshabalala‚ 32. Sebolai stabbed Tshabalala in her lower abdomen after the couple fought at his Soweto flat. She died of severe blood loss.Tshabalala's mother Elizabeth Marawa testified on the impact her daughter's death has had on her‚ saying she has struggled to sleep for months.Earlier prosecutor Elize le Roux called Professor Rachel Jewkes‚ director of the Gender and Health Research Unit at the SA Medical Research Council‚ to the witness box.Jewkes prepared a pre-sentencing report based on a large body of research she and others had done on intimate partner killings in South Africa.Jewkes said that younger women were the victims of intimate partner killings more often than older women. She said that in such cases there was usually a history of violence preceding the death.Jewkes will return to be cross-examined at a later stage after the defence requested more time to prepare questions on her expert report.The court also heard from defence advocate Thabang Mathopo that he was not ready to lead evidence in mitigation of sentence as he had been unable to secure a social worker to prepare a report.Sebolai was also convicted of one count of attempting to defeat the ends of justice for tampering with the crime scene by cleaning up Tshabalala's blood from the floor and disposing of bloodied clothing. He was acquitted of a motor vehicle theft charge.The case was postponed to February 10...