If it saves the life of even a single child then the trip to Canberra will be worth it, says the father of the four children murdered in WA's Margaret River in May.
Aaron Cockman will meet with Health Minister Greg Hunt on Wednesday to warn of the potentially devastating consequences of court involvement in family separation after his wife and children were murdered by his former father-in-law.
"Once Kat, my wife, started seeing family lawyers, things just began to spiral out of control," he said in a statement on Tuesday.
"There was no turning back. I backed away because I could see the enormous strain she and the family were under, especially after the court psychologist's report."
Non-profit organisation For Kids Sake says it will have lobbied more than one-third of all federal MPs and senators on the issue by the end of the week.
They argue the way courts and lawyers are involved in family separation puts the 60,000 children caught up in the protracted proceedings at risk every year.
"The trauma of a prolonged, adversarial separation leaves children scarred for life," the group's ambassador Karen Clarke said on Tuesday.
"This leads to greater risks of many illnesses, from heart disease to cancer, as well as higher risks of teenage self-harm and even suicide."
Alongside Mr Cockman, the group will meet with Mr Hunt; David Gillespie, the junior minister for children; and the attorney general's office, among others.
"We need to find a better, safer way of dealing with family separation than the Family Court," Mr Cockman said.
"There must be a better way."
1800 RESPECT (1800 737 732)
Lifeline 13 11 14
Australian Associated Press
