A hearing is scheduled to begin today to hear the appeal of the verdict in the case of Guy Turcotte, the ex-cardiologist who stabbed his two young children to death in 2009.
And though it brings up nightmarish and painful memories, their mother said she'll be at that hearing.
"I won't be in peace until there is justice," Isabelle Gaston said.
Gaston said she wasn't thrilled with going through the appeal process but added she understands that the crown is defending not only her interests but the interests of everyone.
The mother of three-year-old Anne-Sophie and five-year-old Olivier said she still lives in fear of her children's killer: her ex and their father.
"I will always be in that fear because when someone kills his own children to get to you, you never know where he's going to slip," Isabelle Gaston said.
"Never will I be in peace with that man, never."
Turcotte stabbed his son, Olivier and his daughter, Anne-Sophie 46 times while they slept in February 2009. He blamed his actions on blackouts following his depression during his breakup with the children's mother. A jury found him not criminally responsible in July 2011.
The crown is now arguing the judge made legal errors including not going over enough the evidence and mounds of expert testimony with the jurors. The defence counters that should have been argued before the jury began deliberating.
Gaston points to sometimes dubious expert testimony and said those experts should be subject to review by the Quebec College of Physicians.
"Because they are experts, they have the title, we don't argue what they're saying," Gaston argued.
The hearing is scheduled for two days.