Isabelle Gaston, the ex-wife of cardiologist Guy Turcotte, did not take the stand as expected Friday at a preliminary hearing into charges that Turcotte murdered their two children.
Procedural matters delayed the testimony at St. Jerome courthouse by Gaston, who is also a doctor.
Gaston and Turcotte had broken up just before the bodies of five-year-old Olivier and three-year-old Sophie were fond in their home in Piedmont, about 60 kilometres northwest of Montreal, in February 2009. The children had been stabbed repeatedly.
Turcotte, 37, was also in the house, suffering after he apparently ingested a toxic substance.
The parents had been colleagues at St. Jerome hospital.
Turcotte broke down in the prisoner's box Wednesday as an expert witness described the murders in detail.
