Murray discussed wedding vows with the friend and said the secret marriage could jeopardise Reid's appeal.
"My heart says: 'I should just do it' but my head says: 'Wait'."
Judge Russell Collins said he would hear more submissions once Reid has finished giving evidence this morning.
Murray is defending herself against a charge of smuggling an iPhone, cigarettes and a lighter to Reid in Mt Eden Prison on October 7, 2011.
On Friday, she made a series of applications for the charge to be dismissed after the Crown had concluded its case.
She blamed the police and even the judge for failing to give her a fair trial.
Judge Russell Collins stopped her at one point and said: "You're wasting time. This is a meaningless drivelling submission that is designed to timewaste and get to an adjournment."
Reid is serving a 23-year sentence for the 2007 rape and murder of deaf woman Emma Agnew and the rape, attempted murder and robbery of a 21-year-old student in Dunedin nine days later.
He accused prison guards of planting the iPhone on him.