Court proceedings in the trial against murder accused Thandi Maqubela and Vela Mabena got off to a late start on Monday.
The defence team requested more time to consult with its own handwriting expert.
Defence lawyer Marius Broeksma is now expected to cross-examine the state's handwriting expert.
Maqubela and Mabena are accused of murdering acting judge Patrick Maqubela by suffocating him.
His body was found in his luxury Bantry Bay apartment in June 2009.
Maqubela faces additional charges of fraud and forgery, for allegedly altering her husband's will with regards to his R20-million estate.
In August, the state's forensic handwriting expert Marco van der Hammen said the signature on the will was forged.
He examined 50 samples of the judge’s signature as well as the one from his will.
After examining the samples, he concluded that the one on the will was not a genuine signature and had four significant differences.