She appeared via audio visual link at the HighCourt in Christchurch this morning.
Rakaia farmworker Waldron, 29, was found dead at his Gardiners Rd home on September 18, 2019.
Morris-Bamber, a kitchen hand from Christchurch, was charged soon after the death – but Bamber was only charged with her husband's death earlier this month.
Morris-Bamber, who also denies murder, was due to stand trial next week.
But a new trial date was confirmed by Christchurch court staff today – with both Morris-Bamber and Bamber to stand trial on February 14, 2022.