Jade, from Shotton, Flintshire, was stabbed and strangled by Marsh as their four children slept in rooms nearby.
He was sentenced to life in prison in 2022 and has shown “no remorse,” said Paul Ward, Jade’s father.
Mr Ward felt Marsh was trying to “get one over on the family” by trying to get involved in the children’s lives.
Along with other family and friends, they began a campaign to strip Marsh of his parental rights and suspend the rights of all parents who kill someone they have children with.
They were successful and, in May 2024, section 18 of the Victim and Prisoners Act 2024, external – Jade’s Law – was one of the last to be passed before the general election.
At the time, the UK government said the law would protect children by preventing killers from unduly influencing their lives.
The rule applies to anyone convicted of the murder or voluntary manslaughter of someone they share parental responsibilities with, with an exemption in cases where domestic abuse victims kill their abusers.
But Jade’s family were shocked to learn that the law remains dormant and is not yet being used to protect victims’ families.
